For most minor disruptions, updating your browser and Keplr Wallet to the latest versions would fix any issues. However, in cases where simple updates may not be sufficient, you may also try reinstalling Keplr Wallet.
A Step-by-Step Guide for Reinstalling Keplr Wallet
Before getting started, make sure to prepare to enter your seed phrase or login credentials. Without this, your account could be lost.
First, uninstall your Keplr Wallet from your Chrome browser.
Clear the cache in your Chrome Browser, and reinstall Keplr Wallet. Then, check to have all the permissions enabled.
If possible, connect to a VPN to ensure a fresh connection.