HTTPS broken after upgrade to 15.3.1 (from 15.3.0)

I have Snap and upgrade our FTP server yesterday from 15.3.0 to 15.3.1

now https is no more working.

This site can’t provide a secure connection

ftp01.tsiss.com uses an unsupported protocol.

ERR_SSL_VERSION_OR_CIPHER_MISMATCH
view certificate is fine and valid.
any idea ?
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  • Has ANYONE just installed it and it worked correctly?  I am still not comfortable just "hoping for the best" if I attempt to install this version.  I have yet to hear anything from the support team about this (unless I have missed something somewhere) and I want to make sure that they are aware of all the issues posted above.

    Support has been really good in the past so I just want to make sure they were aware.

    I really appreciate all the input under the forum post.

    Thank you