Parler lost access to its servers, and is suing to get access back. It may be a while before service returns.

No-ones password is very strong. You should be  using a unique pw for every login. Use your "strong" pw for a pasword manager.  One or more of your accounts will be hacked at some point. If they all have the same email and pw your accounts are an open book. That wont help here though this app is broken.