Example:
https://www...beds24.com/control2.php?pagetype=bookingpagedesigncontent&noload=all
will open SETTINGS-> BOOKING PAGE - > PAGEDESIGN - > CONTENT with all content removed.
Note: this will clear all settings on the page.
If you know the language which has the problem you can specify to only not load it this using the 2 char language code like this (for English):
...beds24.com/control2.php?pagetype=bookingpagedesigncontent&noload=en