I have a customer who has bought 2 books from me (same time, combined purchase). Never had this problem before but am now getting a message saying cannot do it, leave the page and try again later. This started happening yesterday (although might have been occurring before that), last multiple was a couple of weeks ago and no problems then. Also no problems with single purchases. Have tried coming at this from different pages and tried both custom and set comments. Nothing seems to work. Anyone else experiencing this or knows of a workaround?
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