Not a place to ask as this is a peer to peer forum.
If all the messages are going to your blocked folder you can add an entry to mark them as not spam and they will also place a copy in your inbox. Also mark some or all such entries in the spam folder as not trash and they MAY eventually correct ther filters.
Another option is to sign up for a free email account that are widely available on the web. I will not mention any here, other than Zoho mail- free up to 1 GB storage and very easy to setup and use. the site is also very fast to load.