No appointment modification with Thunderbird Vivaldi-CALDAV
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Hello,
I try to use the Vivaldi Calendar via CalDAV in Thunderbird. In general it works. I can add my appointments (received by mail) directly to Vivaldi Calender (instead of local).But when I receive an update for that appointment by mail, I cannot transfer it to the Vivaldi Calender. There will be an error message telling "modification not allowed" (or similar).
Is modification of appointments via CAL-DAV (received by mail) not possible with Vivaldi Calender?
Regards
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