SPF record missing

For a few days now I have been receiving emails from noreply-dmarc-support@google.com. It seems that I need to add an SPF record file, because it is missing. At least, my hosting says so. unfortunately I can’t pay them to do the work, so I’ll have to do it myself.

As it happens, at the same time I started to have some temporary and fast database locks.

The page I need help with: [log in to see the link]