Why can't I log in to an additional server?

Hello, Mojang, and other Minecraft players who have Apple devices. I want to report an error that I noticed after I updated the game to the newest version. I played on a server that is not in the list of offers. Before that, it was on version 1.16. Yesterday I forgot to update the game and played on this server on version 1.16.10. Today, after updating the game, I tried to go to that server and I got an error where it was written that the server is outdated. I didn't understand what was happening and decided to restart my iPad. Nothing changed after the reboot. I decided to ask the Admin what the problem is. I would not be upset if the problem was not only mine, but the admin, who has the Android version, said that everything is normal. Mojang, please fix this problem