The monitor type real browser check (RBC) will not be available anymore as of 31 August, 2022, when creating new monitors. Note that this means that you can’t create a new monitor of this type anymore, but if you have existing RBC monitors, they will not be removed and will keep working. You can still adjust those monitors.
We recommend using a Full Page Check (FPC) as an alternative to the RBC. The FPC has similar options and many additional features.