If you want to avoid or disable Smart Card Authentication you may try the following:
1- Check that the account used to logon to RMAD does not have Smartcard auth enabled. Check the properties of the account in Active Directory, go to the "Account" tab and under "Account Options", ensure the option "Smart card is required for interactive logon" is not enabled.
2- Check the same for any other account that is used such as the account specified to connect to the DC, the scheduled task account, etc. Ensure none of the account in scope would have that option enabled in AD.
RMAD uses what is configured in Windows and AD for the authentication. There is nothing done in RMAD to allow SmartCard auth.