Can't login to Paysafecard while trying to add funds on Steam???

[Falcão]

Bought a 25€ paysafecard this morning to spend on Steam but everytime I try to Add Funds, it opens the Paysafecard window to input my login details, and once I do and click Login, the loading wheel spins for a while and then the whole payment window freezes and I can't proceed with the payment.
When I try to login to my PSC account on paysafecard's website it works just fine...