in version 1.7.5, the Settings>Sync page states
https://mobileorg.github.io/support “for help on configuration”,

but (at the time of this posting/shown in the screen shot below)
- that address gives a 404 (page not found) error:

(the correct address appears to be: https://mobileorg.github.io/documentation/)
- that link should be active or at least selectable text (for copy-pasting the address)
<EOT>