Performance of shinyapps-io at December to January

Me and a friend of mine are programmers in our freetime and we hosted some Shiny-Applications on shinyapps-io (free account). we never had problems and suddenly between December 2020 and January 2021 we had performance problmens in all hosted Apps in diffrent accounts (without new deploying).
(the shinyapps-io website had this performance problems too)

I want to know if these problems are a failure of me or does something happened in this time?
Im looking forward to buy a real shinyapps-io account, because i dont want to set up a AWS Server.
Hopefully you have a clue abount my Problems.