You'll needto change the settings on your account and you can do so by following the steps here: help.minecraft.net/hc/en-us/… If you continue to have issues after that let me know. ^TK

Already done that. I am having this issue with all accounts on my Xbox, leading me to believe that it's possibly a software or console problem rather than an account problem. This problem does not occur using the same account MCPE, only on Xbox.

The privacy and safety settings are the cause of that error message, but if you think there may be something else going on, please complete our request form at aka.ms/Minecraft-Support so our team can continue assisting with any issues. ^AM

Those settings weren't the cause. Turns out Xbox Live Gold expired without my knowledge. Might want to update the error message for that to avoid confusion.