Is it possible to edit my notes? All I can do is add new, delete or backup.

Thanks

If you tap on any verse number that has a note attached, the popup menu will read "Edit Note" instead of "Add Note".  This allows you to edit your note(s).

So, in short -- you edit a note the same way you would add a note.

Linking scripture references in my notes,
How are scripture verses to be added so upon touching
Link to text?

If you're using Mantis version 4.0 or above, there's nothing you need to do to get scripture references "clickable" in your notes. It happens automatically.

For example, if, inside my note, I say "see Gen 2:7" then save my note, the "Gen 2:7" will appear as a link automatically.

The Mantis program will recognize all the regular book names, plus most common abbreviations, such as Gen 2:7, Gn 2:7, etc.

There are a few limitations, however. Your reference must be in one of these formats:

Gen 2:7
Gen 2:7-9

We do not support this:

Gen 2:7,8

or

Gen 2:7; 2:10-11

Each reference must be complete, so the one above would need to be:

Gen 2:7; Gen 2:10-11