ok we get some information. I assumed wrongly we were already on a shared hosting.
Now I begin to understand the difficulties this site had.
I'd move in the shared hosting direction as managing a private hosting is quite a job and also to lower the costs.
I'm not really comfortable speaking of all of that publicly for security reasons. I'll try to paint a general case and i'll send you my email contact.
First I'd make a full backup.
Database and the site.
I read on simple machines site that the database exporting tool is not that reliable so you have to do it the old way.
To manage your database you should probably have phpmyadmin installed and you can access it via database login e password you should already have.
Once there go for the full backup. We will try to clean that data after a full backup.
https://www.mysqltutorial.org/mysql-administration/mysql-backup-a-database/pls check if you have such thing as database login and password and/or phpmyadmin access. DO NOT WRITE THEM HERENext you need to backup the entire site. You have some option here depending on what kind of access you have to the site.
You should probably have ftp access.
You need a ftp client software to download your files. Filezilla is a very good, reliable, freee open source ftp client.
https://filezilla-project.org/pls check if you have ftp login and password, DO NOT WRITE THEM HEREOnce all backups are done i'd search a good shared hosting like the one I posted before. (all the steps below could also be tried locally on a development environment like XAMPP
https://www.apachefriends.org/index.html )
I'd restore the database as it is now
I'd install a new version of simple machines and connect to the database
Restore all the site files (site backup. mainly the images) and see if it works. If not we can revert to an old simplemachines version or try to adapt the files to the new installation.
If all works you could try to clean the database and the site files, drop the old hosting and point the domain primitivarcher.com to the new hosting
sorry if I am not very fast in responding but It seems I'm always chasing time to keep up with the speed of life