I recently used Plaid to pay the final balance on my 21 M3 LR. I was not going to give Plaid my banking credentials (user name and password) but found a work-around that uses the usual ACH info. You can close the "select your bank" dialog box, using the X in the upper right corner. You'll be presented a new option to add your account info manually. After that you'll be prompted for the usual ACH info (routing number and account number). I felt better going this route. Hope this is helpful!