Over last couple of years, we have accumulated much repeated questions. I have started putting out guides for technical matters specific to Cloudron.
For now, I have published:
A few others that should be out this week is "Importing Email", "Decrypting Backups" and "Migrating WordPress".
If you feedback on the guides, please do comment here. If it's typos/grammar, you can just open an issue in the issue tracker (to keep the discussions here on broader things).
Again, all guides are Cloudron specific. If you have any requests, please put them here and I will be happy to add them.
You are also welcome to contribute directly to anything in the docs - https://git.cloudron.io/cloudron/docs