I can't speak directly to your specific issues, but I have used Ionos by 1&1 for years with no hassles or problems. Tech support has been very good when needed and they seem to be reasonably priced.
On a Mac since 1984. Currently: 24" M1 iMac, M2 Pro Mac mini with 27" BenQ monitor, M2 Macbook Air, MacOS 14.x; iPhones, iPods (yes, still) and iPads.
