Official release Synology DSM 7 and Java8

[retraite]

Hi Simon
Having read the content of this thread – evidently not carefully enough, I set about installing DSM7.0 on my Synology DS214+, which houses part of my music collection. I was required by the upgrade to uninstall Java 8, which I did.
The installation then proceeded without problem, but in the package centre afterwards, Minimserver shows as stopped with a message that says “Please go to Beta packages on the left panel to repair the package by joining the beta program”. As far as I can see, there are no Beta packages on the left and no means I can find of joining the Beta program, or of directly addressing the updated version of Minimserver.
When trying to uninstall Minimserver, the message is “Failed to uninstall the package. You must deactivate your Minimserver license before uninstalling”.
The problem with that is that the installation no longer appears in Minimwatch, so it isn’t possible to de-activate the license. I seem to be at an impasse and would appreciate your guidance before attempting more onerous means of restoring access to my music.
I should add that the balance of my collection resides on a Synology DS218+ and presumably I’m likely to encounter a similar issue when the time comes to upgrade that, so any advice you can offer on that would be welcome too.