OpenVpn Client Athentication Configuration ?

[Skywalker1726]

Hi Everyone , i recently got a VPN subscription , which i cant setup on my router , i'm using Padawan Custom Firmware on my router .
the previous connection that i had was quite simpler , i had a "/ca" and a "/tls-auth" with a username and password .
the new subscrittion provider , has given me three cert and key , with a username and password : /ca , /key and /cert .
the problem is that if i choose "UserName and Password" as my Authentication type , (and no HMAC Signature Check) , i only get the "ca.crt (Root CA Certificate)" in OPENVPN Cert and Keys tab , and the only way to get "Client.crt" and "client.key" added to this tab is to change the Authentication type From "usernamePassword" to "client.cert" , which then disables any entry for USERNAME or password in the UI .

so my problem is that i cannot use , user name password and 3 part cert and keys tab , together . since the UI wont allow me .
any help would be appreciated.

thanks .

ps : i tried setting the conf to Client.cert authentication type in the ui , which enabled the three part cert and key section, and for the username i did input

--auth-user-pass <(echo -e "username\npassword")

in the extended openVpn configuration

which did not work and i got an error mentioning bad use of backslash .