I'd like you to spend an hour looking at my website and establishing the solution. I can't upload any new products or pricing. The website is also extremely slow. As you suggested, transferring the hosting might not be the solution. So I'd like you to spend an hour looking at things to identify what's going on.
It is essential that any solution still includes allied wallet (my gateway checkout)
Allied wallet had to alter their code at the start because of compatibility issues with the site.