There's been issues with this on many different phones..... look for a safe apk to install an older version. Or wait for update my friend. I'll check for an older version. Make sure play doesn't auto update though, k?
---------- Post added at 09:09 AM ---------- Previous post was at 08:56 AM ----------
Well its difficult to find a trustworthy apk. But go to apps and uninstall updates. Make sure you have auto update in play off. If your phone came with YouTube it will go back to original version that worked and wait a few days or a weeks and install YouTube again. I'm sure by then they will have fixed this issue.