The Fix It button does not indicate anything is wrong with your Node. It is only indicating that the app is/was having problems contacting your Node.
This communication is 100% independent of your Node’s ability to participate in committee validation. Your Node can still be selected to committee, earn PRV and return the waiting pool, all while the app displays the Fix It status.
The Fix It button will sometimes “resolve” on its own without any intervention on your part. If it is particularly upsetting, you may be able to hasten the resolution by power cycling your Node. Note this doesn’t always resolve the issue.
The Fix It “issue” is actively being improved by the devs.
For now, it’s just an anomaly that you can safely ignore.