I had an app login problem a couple weeks ago. Was unexpectedly logged out of the National app and it wouldn’t let me back in. Didn’t come back to it for a few days and it was fine the next time I tried to log in.

And then a few days after that, Enterprise wouldn’t accept my National Emerald Club credentials. Same thing — tried again a few days later and it was fine.

I usually chalk it up to being 6 hours from the EDT time zone. Not just National, but in general. My “normal” usage in the evening is actually the middle of the “maintenance window.” East coast.