I suppose that if miui decided to stop those services...eu had to stop them tοo...
Those services has to do with Xiaomi's servers (I think). So, if Xiaomi stop servers, services will also stop.
Same issue, I was able to apply Limitless when launching the phone for the first time after installing the ROM, however, I did a factory reset, picked the default theme and now I am unable to switch to Limitless again.
Τoday i found out that all 9.5 roms re-uploaded on Mar,18. See here.
Try to re-download the rom and re-install it again on your device. May be there is a fix and you just dont get the notification. Just a thought...