Originally Posted by Often1

Yes, call.

No ticket means that you will not be permitted to board as that is evidence of payment. Whether your situation is intended, an error or simply a slow process, you can't know without a call. No need for you to speculate, simply ask for the e-ticket number for the segment in question.

For the benefit of the broader community, one needs both a reservation and a ticket. Anything amiss may well be an error or something which self-corrects or requires an extra minute or two at check-in. OR, it may be a sign that there is something wrong which needs to be addressed immediately.