I have 2 Fidelity 401k accounts. One of the accounts shows that is it much higher than is show on Fidelity. And the other one shows much lower than on Fidelity. I've read the other threads, but nothing has helped resolve the issue. I disconnected and reconnected as well. I use Quicken on Mac.
https://community.quicken.com/discussion/7965464/updated-5-6-26-fidelity-updates#latest