I booked a LCY-GVA-LIS round-trip on LX via our corporate travel platform TripActions. The outbound departs tomorrow.

Attempting to online check-in today, I discover that the LCY-GVA segment was cancelled (on May 17) and I'd been rebooked via LHR. I did not like this option and was asked to be rerouted LCY-FRA-LIS on LH. While not ideal (longer layover), it's better than going to LHR.

Troublingly, I received no notification of the cancellation / rebooking from either Swiss or TripActions. The Swiss agent initially claimed it's because TripActions did not provide my e-mail address to them. That cannot be correct as I've been receiving other e-mails from Swiss about this trip related to Covid regulations, etc. I also could see my e-mail address on file when I log into my Swiss account (linked to the same e-mail address) to view the booking. A second explanation was then provided that TripActions did not enter my e-mail in the "correct format". Eager to prevent a repeat experience in the future, I contacted TripActions, and their agents had no idea what Swiss was talking about. I've escalated the issue with TripActions but am wondering if the experts here have any other ideas for what might be root of the problem.

Separately, my new LCY-FRA flight on LH departs tomorrow at 7:50am. While the rebooking was done 3 hours ago, the new ticket has not been issued so I cannot check in or provide my Covid docs to LH (I had already provided them to LX). Calls to LX and LH were unhelpful as I was told to just wait, with no indication how long it might take. I don't love this given (1) inability to select seats until check-in and (2) the online Covid doc submission only available up to 19 hours before departure. Is it normal for a rebooking to take this long to be re-ticketed?