I know this topic has been covered but I already contacted support about this and the automated reply email asked if I needed this escalated then to post in the forums so here I am.
I started getting the error stating that my flash drive was not read/write. In response I ordered a USB 2.0 stick and created a flash backup in preparation for the inevitable since that seems to be the fix with the majority of these cases. I used the USB flash creator tool on the new flash drive with my flash backup zip file. I then disconnected my old USB flash drive from the server and connected the new USB flash drive. Using the GUI, I navigated to the key registration page and noticed that there is no Replace Key option there. I don't ever recall replacing my USB flash drive so I'm pretty sure I'm not within the 12 month replacement window as I have had unraid for a few years at this point. Anyway, I contacted support and they said to expect a response within a few days. I run pfsense on my server so I would like to not have to reconfigure my Internet just to get it up and running for now and then changing it back later. Any chance I can get a replacement key for my new guid sooner?