Upon running the Spine Launcher (4.1.12) I get the following error message:
"Unable to start
Sorry, Spine is not able to start:
A connection was established, but not to the expected server.
Please check your internet connection and any firewall settings that may be blocking Spine."

I've tried all of the suggestions on your support page to no avail. I don't believe my firewall is blocking it, as I'm able to ping the servers from the command line and access us.esotericsoftware.com in a web browser. It does warn me that the site is unsecure though?

Here is the spine.log file if that helps:

Spine Launcher 4.1.12
Esoteric Software LLC (C) 2013-2022 | http://esotericsoftware.com
Windows 10 Pro amd64 10.0
NVIDIA Corporation, NVIDIA GeForce RTX 2070/PCIe/SSE2, 4.6.0 NVIDIA 516.94
WARNING: Unable to ping server: jp.esotericsoftware.com
javax.net.ssl.SSLHandshakeException: Remote host terminated the handshake
at sun.security.ssl.SSLSocketImpl.handleEOF(Unknown Source)
at sun.security.ssl.SSLSocketImpl.decode(Unknown Source)
at sun.security.ssl.SSLSocketImpl.readHandshakeRecord(Unknown Source)
at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(Unknown Source)
at s.AoS.(:161)
at java.lang.Thread.run(Unknown Source)
Cause: [eof] SSL peer shut down incorrectly
at sun.security.ssl.SSLSocketInputRecord.read(Unknown Source)
at sun.security.ssl.SSLSocketInputRecord.readHeader(Unknown Source)
at sun.security.ssl.SSLSocketInputRecord.decode(Unknown Source)
at sun.security.ssl.SSLTransport.decode(Unknown Source) ...
WARNING: Unable to ping server: us.esotericsoftware.com
javax.net.ssl.SSLHandshakeException: Remote host terminated the handshake
at sun.security.ssl.SSLSocketImpl.handleEOF(Unknown Source)
at sun.security.ssl.SSLSocketImpl.decode(Unknown Source)
at sun.security.ssl.SSLSocketImpl.readHandshakeRecord(Unknown Source)
at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(Unknown Source)
at s.AoS.(:161)
at java.lang.Thread.run(Unknown Source)
Cause: [eof] SSL peer shut down incorrectly
at sun.security.ssl.SSLSocketInputRecord.read(Unknown Source)
at sun.security.ssl.SSLSocketInputRecord.readHeader(Unknown Source)
at sun.security.ssl.SSLSocketInputRecord.decode(Unknown Source)
at sun.security.ssl.SSLTransport.decode(Unknown Source) ...
WARNING: Unable to ping server: eu.esotericsoftware.com
javax.net.ssl.SSLHandshakeException: Remote host terminated the handshake
at sun.security.ssl.SSLSocketImpl.handleEOF(Unknown Source)
at sun.security.ssl.SSLSocketImpl.decode(Unknown Source)
at sun.security.ssl.SSLSocketImpl.readHandshakeRecord(Unknown Source)
at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(Unknown Source)
at s.AoS.(:161)
at java.lang.Thread.run(Unknown Source)
Cause: [eof] SSL peer shut down incorrectly
at sun.security.ssl.SSLSocketInputRecord.read(Unknown Source)
at sun.security.ssl.SSLSocketInputRecord.readHeader(Unknown Source)
at sun.security.ssl.SSLSocketInputRecord.decode(Unknown Source)
at sun.security.ssl.SSLTransport.decode(Unknown Source) ...
ERROR: Unable to start (0x137438953472): A connection was established, but not to the expected server.
[error] Unable to connect to server: https://usapi.esotericsoftware.com:443
at s.Oer.(:277)
at s.Oer.S(:130)
at s.mPZ.S(:272)
at s.cVU.(:280)
at s.cVU.(:164)
at s.AdQ.B(:48)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Cause: javax.net.ssl.SSLHandshakeException: Remote host terminated the handshake
at sun.security.ssl.SSLSocketImpl.handleEOF(Unknown Source)
at sun.security.ssl.SSLSocketImpl.decode(Unknown Source)
at sun.security.ssl.SSLSocketImpl.readHandshakeRecord(Unknown Source)
at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(Unknown Source)
at s.Oer.(_:258) ...
Cause: [eof] SSL peer shut down incorrectly
at sun.security.ssl.SSLSocketInputRecord.read(Unknown Source)
at sun.security.ssl.SSLSocketInputRecord.readHeader(Unknown Source)
at sun.security.ssl.SSLSocketInputRecord.decode(Unknown Source)
at sun.security.ssl.SSLTransport.decode(Unknown Source) ...