Click the settings icon, then the account settings icon, then the three-dotted icon and select “Refresh all accounts.” This worked on my main profile on GrapheneOS, but not on my alt profile.

It still works . . sometimes. I’ve had to re-try multiple times and/or log out and try a different anonymous account. In the end over the past week, on 3 different phones, I’ve been able to update. But each time was a flaf.