Can't Get 2Checkout Password To Save In Membership Gateway Settings

I am still struggling with the new Membership Version. Lots of good things, but a few glitches.

I am using the Business Portfolio Child Theme, and I cannot get my password to stick when I try to save it in the gateway settings for 2Checkout. All the other values are saved.

So, when I test the sign up for membership it will not go through and I get this error where the sign up button should be:

There was a problem connecting to 2CO. Please try again. REF:403

I have attached a screen shot.

Any suggestions?