Bookem gets updated regularly. When this happens, a pop up will ask if you'd like to update or be reminded in 5 minutes. Clicking update will load the latest version. If you have unsaved work, its best to finish first and then update on the next prompt.
On rare occasions, your browser may get stuck on a version. This requires a hard reset to fetch the latest version. This may need to happen, for e.g., if you are having intermittent internet connectivity, or due to something far more sinister (and rare): tiny, malicious entities called 'bad service workers'. These need to be purged manually. Fortunately, it's a painless exercise. Below are the steps how to do it.
First, try entering the following into your browser: https://app.bookem.com/force-update
That should do the trick. If it doesn't, follow the steps in one of the options below.
See Google's article on it, or:
Please let us know if you still have trouble after doing a hard reset by mailing us on help@bookem.com.