YouTube error!

Hello,
Recently, my YouTube app has been saying "connection to server lost, please try again" and I've looked on every website that I could find to fix this problem, and none of them have worked. So I went onto YouTube but opened it in chrome this time, and it worked fine! Until I signed into my account, and then it said "an error has occurred please try again later" this has been going on for several days now and hasn't been fixed. If someone out there has a solution please let me hear it :)