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1. Browse the known issues section or check if another user previously posted about a similar issue.
2. Upvoting posts help us understand how many players are experiencing the bug.
3. Refer to the Best Practices to learn how to write a bug report.
4. File each issue separately if you’ve encountered multiple issues.
Accepted Gyms and pokéstops disappears and give error 2

in Report a Bug
Hello,
Since you did the maintenance in Pokémon GO, errors have been reported in stops and gyms accepted. If you try to leave a pokemon in the new gym, the game says "error 2" and does not let you put anything.
After a few hours, the stops disappear and the gyms go back to being pokéstops, or both disappear from the game.
I hope you fix it soon, it is a very annoying error, especially for those of us who work with wayfarer to improve the gaming experience.
I attach some images from different players who reported me in case they help to see the problem. Greetings!
Comments
They have taken the problem as resolved, but it is not, it still has flaws, I hope they solve it soon, niantic you are a large company but you invest little in the solutions of your games!
Maybe it got moved? That would be the most senceful reason.