As far as I’m aware, a decent MCPE servers costs money to run. There’s a paid app called Multiplayer for Minecraft PE which lets you connect with players and friends from around the world. There’s also third party hosts, simply do a google search and you’ll find quite a few.
I believe it’s a problem with the system software. However, if you’re desperate to fix it, there’s a chance that deleting and reinstalling the game may help. U can google how to back up your worlds so u don’t lose them. Also, if u have any Addons installed, try deactivating them, as they may interfere with game mechanics. Perhaps also try freeing up some space on your tablet. Hope you fix it!
Hi, I’ll try to help: At the top right corner of the screen is a little round button with a person on it. Click it and click on “Submissions”, and you should be able to access your submissions. ALTERNATIVELY, you can go to your profile page, and to the left you’ll see a drop down menu. Click that and you’ll see in the list “Submission Gallery”. You’ll also see you read submissions there.