After updating realms to 1.16 by making a back-up, deleting the nether files in a singleplayer version and reuploading the world again my (free trial of) realms gave an overflow error multiple times (after loading the nether with all 5 people online being kicked out). After that my game chashed a view times when i tried to re-open realms in general.
When i go to my minecraft.net account my (free trail of) realms is gone and it has the screen with where and how to buy realms again.
Related issues
Comments

Thank you for your report!
We're tracking this issue in MC-191157, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – ✍️ Feedback and Suggestions – 📖 Game Wiki
-- I am a bot. This action was performed automagically! Please report any issues in Discord or Reddit