Hi,
Welcome to Vivaldi's Forums!
About Send Email:
@tonci-razmilic said in Vivaldi Calendar problem:
I can't send e-mail messages with Vivaldi account
Look at Mail Fix | Send.
I don't know whether this would also fix the Calendar problem.
About Calendar:
Check on a New Clean https://vivaldi.com's Profile if necessary.
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Right side" | IMG_20191004_050746_resize_55.jpg
Rename it as Tests or something related, and use it as a Clean Profile, to test without custom configurations that can alter the original operation.
Since the result, check:
Active Flags / Experiments
Ad Blocker
Clean Cache
Site Data
Extensions -
Tip
Or fill in a Bug Report and please, add the VB# to the topic for follow up.
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"Off Topic Tip"
Follow the Signature's Backup | Reset link.
Take the opportunity to start a Backup plan and even create a Template Profile.
Windows 7 (x64)
Vivaldi Backup | Reset + Extra Steps