I have been using GrapheneOS on a Pixel 6a for several months without any issue at all. Recently, I went on a trip for about 8 weeks where there was no internet availability, so I did not use my device connected to the internet but used some of the apps offline. When I returned, I attempted to connect to the internet, but all of my networks indicate that they had "Limited Connectivity" and asked if I wanted to connect anyway. After adjusting some settings, I finally got the limited connectivity error to clear, I believe by changing the Internet Connectivity Checks to "Standard (Google) Server.
However, both before and after clearing the connectivity issue, the automatic updater has failed. Specifically, I get a notification that the system updater "Failed to check for updates" and that the "Chain validation failed."
Additionally, I am unable to download any apps and get a notification that I am not able to download the app (I am trying to download an app from the Neo Store). and that there is a Network Error.
I have seen a couple other threads with similar issues but the fixes recommended did not work in my case. Does anyone have any thoughts on a possible solution, or do I need to wipe the phone and start over fresh?