Hello!
Apparently your hosting has indeed upgraded the php version, that's what causes the chain of errors there. CRELoaded, as well as OSCommerce which it derived from, relied on many deprecated PHP functions and usages, and there's probably quite a bit of work fixing them all. I would like to see the URL that shows all those errors. I'm available to work over the weekend and fix it within the next 48h most likely. I will need ftp login and website admin (there are also some errors there, too, for sure)
Regards,
Dragos