OpenVPN not displaying user/password

I am trying to connect to OpenVPN with all my files in my GL-MT300N-V2:

cert.txt
he-ca.txt
ket.txt
default.ovpn

This is my .ovpn file:
client
dev tun
remote XXXXXXXX
remote XXXXXXXXXXXX
port 1194
pull
auth-user-pass
tun-mtu 1500
mssfix 1400
key key.txt
cert cert.txt
ca he-ca.txt
compress lzo
keepalive 10 60
nobind
float
cipher BF-CBC
remote-cert-tls server
push-peer-info
auth-nocache

I upload the files into a zip but no user/password is prompted but a passphrase that I don’t have. I tried to upload the firmware but the error continues. My current firmware version is 3.203.

Please help!

From your information the router should ask for username and password. Can you send me the zip to try? You can send to support at gl-iNet.com

Hi alzhao

File sent to support mail