After purchasing an account, many stores provide a link to the profile in the kit. Using this link, you can check whether the account you bought is alive or dead (blocked).
This is done very simply.
Follow the link facebook.com/profile.php?id=ID , where ID will be your account ID. As a rule, it has the format 1000914578624 **.
If the user profile has opened, then everything is fine with the account and you can log in to it.
If the inscription "Content is unavailable" appears on Facebook, it means that the account is already blocked, and it is better not to enter it, so as not to burn your IP and hardware for FB filters.