If you are unable to access Bookem due to your browser reporting "This site cannot be reached", or something similar, your internet connection or Bookem could be down (see screen shot below). However, since you are reading this on our website, this is unlikely to be the case. It's more likely that some Bookem data thats stored on your browser has been corrupted.
To potentially fix this issue, you can visit https://app.bookem.com/sw-fix.html to remove this corrupt data. You'll need to close all Bookem tabs after visiting the aforementioned URL. If the problem persists, please try closing all your browser windows and try again.