21st - 22nd August - on the list:

https://www.boxofficemojo.com/date/2023-08-21/

https://www.boxofficemojo.com/date/2023-08-22/

23st - 24st August and later - no longer on the list

https://www.boxofficemojo.com/date/2023-08-23/

https://www.boxofficemojo.com/date/2023-08-24/

Just (lack of) data issue or something more to it?

They usually use italic and background colour to highlight approximate data.

EDIT: It’s back on both links now.

21st - 22nd August - on the list:

https://www.boxofficemojo.com/date/2023-08-21/

https://www.boxofficemojo.com/date/2023-08-22/

23st - 24st August and later - no longer on the list

https://www.boxofficemojo.com/date/2023-08-23/

https://www.boxofficemojo.com/date/2023-08-24/

Just (lack of) data issue or something more to it?

They usually use italic and background colour to highlight approximate data.