The WireGuard app refuses my file

If the WireGuard app rejects your litora.conf, you almost certainly downloaded an AmneziaWG configuration. That file is not broken: its extra parameters are exactly what reshapes the handshake — and the standard WireGuard app deliberately does not understand them.

Two fixes, pick one:

• Install the AmneziaWG app (iPhone, Android, Windows) and import the same file there. This is the one to choose when the standard tunnel will not connect.
• Create a standard configuration instead — sign in, create a new configuration and pick the standard tunnel. Choose this only where the standard tunnel connects reliably — it is the faster of the two.