Sorry but have to say it,
Paymetheus wallet is serieusly the worst wallet i ever had, and trust me i owned around 20.
At first the blockchain downloading keeps stuck and when you restart the wallet it ask for the passphrase and give a standard incorrect passphrase error.
And yes im typing the right one, cause i did it 3 times now and im 100% sure its the right one.
So again restarting it with the same seed to recover and after putting in the seed it again start downloading the blocks and after scanning the blocks.
And guess what scanning stuck, again have to restart and guess what again incorrect passphrase.
Serieus i wanted to stake this coin and keep it but after a morning fight with this wallet i dont even know if i want it to work anymore.
Scanning/syncing for the first time can take a few hours depending on your machine.
It's asking you for the Public Passphrase, which you probably didn't set and can press the button without entering anything.