YouTube doesn't work on home Internet

Well, I went away for the weekend and when I returned, the problem has disappeared as it seems to have for others as well. I did contact YouTube last week and was given the same first-line advice on their end as well (restart router, update apps, etc). They said that their engineers couldn't reproduce the problem, and basically offered no solution. However, this morning on my return, all seems to be working well with Youtube, Youtube Music and the Play store. I agree with others that this was probably resolved on the Tmobile engineering side. Hopefully, it does not return.