Xbox 360 Error code 80151103

Hey everyone, so after searching through the entire internet from the end to the beginning, I cannot find an answer on how to fix error code 80151103 on my Xbox 360 Slim. So far what I know is that it is an issue downloading the account (which I am doing), and I have tried everything to fix it. No my account isn't banned, since if I go on my Xbox one, my account works normally. I did recently buy Xbox gamepass instead of gold, which I thought of may be the issue, but there aren't any reports of the issue existing so it might not be the problem.

I have tried:

1. Clearing cache and unplugging Xbox for 3 minutes.

2. Deleting account and redownloading it (More explained below.)

3. Resetting the password to the account.

4. Checking to see if my Xbox one has a suspended game running.

5. Switching the Network to Manual IP Settings and DNS Settings then switching it back to automatic (resets IP) + Factory default reset for network

6. and of course checking Xbox live services.

Those are the 6 solutions I have found, with no success.

You could say just play my 360 games on my Xbox one, but I have 360 games that I want to play that aren't backwards compatible with the Xbox one.

Going back to #2, I did that because I can't connect to my regular WI-FI/internet since I get an error code from that too, causing me to delete my account and trying to redownload it, since a tech article said it would fix the problem. ALSO it is not an issue with the console, as I connected it to a mobile hotspot and it worked normally. Nor is it an issue with my internet (I think) since everything else is working perfectly with it.

If anyone can help me that would be awesome, hopefully this thing isn't a brick now...

:)