From submission issue resolved

There was continue issues - forms couldn't be submitted. But resolved now. Response from Herman. (nordic social media)

I attempted to clear the entire site cache, as well as deleted the SEO plugin (which caches the site regularly to make indexing easier) - I have a theory that somehow switching the domain has prevented it from clearing the cache itself (It is a SEO tool so it indexes per domain), which would entail that basically it thinks that you just submitted a form, and prevents you from doing so in an attempt to prevent multiple submissions from the same person within a short period of time. Let's see if it works.

Can you test it again please? It worked 3 times for me this morning; in regular mode, in incognito mode, and with a VPN.