for Meetings and Calls part, User can not recevie the systen reminder email

[Tina]

/data/logs/ shows this,
[2025-07-10 09:30:40] ERROR: EmailAccount 68525c5fb517e97aa, could not select folder 'IT - margunas.lt'; [0] cannot change...

[Tina]

for Meetings and Calls part, User can not recevie the systen reminder email, but she can recevie the reminder pop, what may it cause?
and the send...