I reported this many times, over a year or two ago, but developers back then actually refused to believe my claims.
Their reasoning was, that you can only synchronize your profile, while the Public Test Server is online.
Well, I tried to do that during active Public Test server time and the result was the same as I predicted it would be.
Synchronize option did not became available for me, it was still greyed-out, which means that if I clicked on it, it didn’t update with 24-hour cool-down.
I do not know what to do, to fix or resolve my issue. It could be connected with the Launcher, there must be some mismatch somewhere.
Screenshot: (I was unable to synchronize my current profile, however the old one was still there, when synchronization still worked)