Not allowing me to add friends

Ok, so today (4.9.20) I can't add anybody on my friends list, (I'm on Xbox One) and I've tried from multiple platfroms to try to add my friend back for some reason it made him and me unfriended each other, and now we both can't add each other, and I don't
know what to do about it. So it'd be nice if I could find out how to solve this, because I don't want to have him removed forever (he even told me that he didn't block me and I didn't block him, and it shows an error message everytime I try to add him back).
Also, please let me know if this is happening to anybody else.

Hi there, had same trouble just yesterday, not just on the console but on the companion itself and the website as well... all it took really was some waiting (5-10 minutes), it seemed that I have made too many changes on my account in a very short amount
of time, so all it was basically just a small cooldown. It might be the same for you. Try again in a little while.

When I tried to add friend again it says

Cant save changes at this time

Although it did allow me to add a different friend

Done that when I try to add my friend it says

Sorry we are unable to save your changes

But it did allow me to add a different friend

I can 't add friends, I'm currently at the Xbox.com Profile, I searched my friend's gamertag and clicked add friend, it allowed me to click it but it wont do anything, neither an error message is showing up.

Oh, I forgot. My old account, BlueGummiBear64, has like 10,000 points.

Anyways, how do I get back into it since I'm locked out?

I forgot the password and I need the password to enter the account because I was an idiot and made it do that. ._.