I experienced exactly the same thing earlier this month. Due to "suspicious activity" on YouTube, Google suspended not only my YouTube account, but also Gmail,

I experienced exactly the same thing earlier this month. Due to "suspicious activity" on YouTube, Google suspended not only my YouTube account, but also Gmail, Google Chat, and ALL other services they provide, including their Cloud services. They provide no explanation as to why the accounts are closed, and provide only a single form to appeal the situation. In my case they refused to release the locks on their services so all information, all contacts, all files, all histories, all YouTube data, and everything else they store is now effectively lost with no means of getting the data back. This was done without warning, and the account was locked due to "suspicious activity on YouTube". Through Experimentation with a new account I found that the "suspicious activity" they were referring to was Criticism of the Trump Administration policy of kidnapping children from their parents. Posting such criticism to the threads that follow stories by MSNBC and other news sources triggered Google to block YouTube and all other services they provide and to do so without warning or any explanation.