Autoblog. Feed is not valid

I use autoblog to import my feed ,but when I try to import I get this:
Feed URL is invalid and cannot be processed.

Also this feed is not valid: https://validator.w3.org/feed/check.cgi?url=https%3A%2F%2Fblog.sillybillystoyshop.com%2Ffeed%2F+
('The read operation timed out',) (SSLError; misconfigured server?) [help]
How can I fix this? I'm the owner of this feed.