Most of this can be managed yourself. If you are on shared hosting then allow / deny permissions should not be an issue. If you have something like cPanel available then you can check the file read / write / execute permissions yourself.
I’ve been talking to the hosting company; It’s something on their end: nothing to do with Kirby. They are working on fixing the permissions. Thanks for the info, It allowed me to stop thinking it was something with the .htacess file. I was pulling my beard out.