Hello Cindy - doing a total site rebuild on a new fresh install version 1.5.5f - OPC version 2.0.1 - site is https://www.treeoflifejewellery.com.au/testsite/ which has PayPal express checkout and PayPal Pro activated - Guest Checkout is enabled as 'true' -

as a Guest (not logged in) at checkout OPC worked fine when selecting method of payment as PayPal (did a transaction through to completion/confirm order and it went through OK) - however selecting credit card I am getting the following pop up dialogue box message;

HTML Code:
Please make the following corrections:

* The credit card number must be at least 10 characters.
* The 3 or 4 digit CVV number must be entered from the back of the credit card.
the credit card is a Visa so has the required number of characters - seems to me that it is not recognizing that characters are being added to the respective lines even though they appear OK when typed in. I have tried a few times with the same result.(after cache cleared and system reboot)

myDEBUG has about 4400+ lines and contains personal data so I won't post it in here - I didn't see any references to 'errors' in it though, but I'm not sure what I would be looking at anyway. I cannot confirm that it works on the original site as it is version 1.5.1 and I don't have OPC working on it.

I am not sure what other information I can offer at present - if you need more information please ask.

cheers,
Mike