I'm fairly sure the issue is that you don't have 20 hours played yet on your new Jem'Hadar character. Unless I'm misremembering things, you can't claim the rewards until then.
Confirmed, Federation Vanguard Jem'Hadar can't continue this mission. I'm guessing that all of these missions have to be adjusted for them to work properly.
When this didn't work for me on the first two missions, I gave up and skipped to the Solonae missions, which did work on my Vanguard. I'm currently on the Delta quadrant missions. The New Romulus missions also worked on my Vanguard (I've done a couple of those).
Can also confirm the mission works if you don't die fighting the mutant Hur'q. I died the first time and had to redo the entire mission, as it apparently has broken mission progress save points.
I ran into the same problem. Since it wasn't working, I skipped to the next mission. The trip to Vulcan to pick up the ambassador worked. But I don't get the mission start prompt at the Pjem system.
I started seeing the same issues two days ago myself. When I run a tracert everything appears fine, but the pathping check indicates a serious problem on the second to last hop: tracert patchserver.crypticstudios.com Tracing route to patchserver.crypticstudios.com [208.95.185.41] over a maximum of 30 hops: 4 23 ms 23 ms 23…
Good news, this appears to finally be fixed despite not being in the patch notes. I was able to access the temporal rewards vendor and claim rewards again.
This is still bugged on all of my non-temporal characters. The only one that can claim any temporal rewards is my temporal recruit via the item. I only have access to the delta recruit awards from the vendor.
Any chance of an update on this? The bug was not fixed for everyone and at least some players (myself included) still cannot access the temporal rewards.
I'm not sure it matters. From what I've read you can transfer the upgrade tokens by using your account bank (or even sell them on the exchange). To be absolutely safe, I would claim the pack on the toon you want the tokens on (that's what I did).