CP bookings should not have any limit. If you can't get through on the phone, you might want to inquire at:Does anyone know if there is a limit of how many companion pass flights you can have booked at any one time? We currently have 3 flights booked. When I booked a return flight for my DH, it won’t let me add the companion. Keep getting an “unspecified error”. Tried to call as per the error message, but hold time is currently 40 minutes, can’t stay on that long right now as we have a 7am flight tomorrow. Will have to call some other time. Thanks!
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Another option would be to clear your history/cache or use incognito mode and try again.