UBUNTU SERVER SOFTWARE FOR UBUNTU is not updated to 1.16.220.XX on the official bedrock Server API page on https://www.minecraft.net/en-us/download/server/bedrock/ site.
To recreate the issue, just press download on Ubuntu which is on the right-hand side.
It says bedrock-server-1.16.210.06.zip
it's supposed to say something like 1.16.220.XX.zip for example.
The server just says outdated and the only way to fix this bug is to update the version of your game on your website for Ubuntu servers on the right-hand side. This is a weird bug report, but it's like saying your entire game is bugged since we can't download the latest API to put on our privately hosted servers using ubuntu.
this might be the wrong format, but this is the best way I can point out the mistake you guys made. Thank you for reading my bug report Mojang. Keep squashing all the bugs.
this issue has now been resolved please delete this bug report.