ISSUE WITH navpay.navcoin.org

Hello,
i have created NAV wallet in 2017 and added a note that i can use 
Web wallet: https://navpay.navcoin.org
to access it. So wanting to send some NAV out, i went there, added my 12 recovery words, yet it says:
Error: Could not import: Wallet not registered at the wallet service. Recreate it from "Create Wallet" using "Advanced Options" to set your recovery phrase
I am unable to find any Create wallet with advanced options, it only start Generating wallet and ends in error: Cannot Create Wallet: Error creating wallet: Network error
This is Firefox 94.0.2
I do not have any .json wallet file or such. So how should i proceed? The smallest Linux wallet i have found on https://navcoin.org/get-started#light-wallets is NavCash.