Cron Job Activation taking more than 48 hours

The cron job created in Cyberpanel takes more than 48 hours to get activated for me.
I had one cron Job running in my system which I created for test purpose.
It started working for me 2 days after it was created.
I kept log of the cron job in my server using php.
When I deleted that cron job on 28/07/2023 at 05:37:01, as per the readings shown in my log file the last cron log recorded was on 28-07-2023 at 05:39:01.

I created a new cron on the same time on my server .i.e; on 28-07-2023 at 05:37:03 itself.
But its still not activated.
Script is running fine with no issues. but cron has still not called the php script.
Its already 3 days past. don’t know why it is taking so much time
Please do help on figuring out what is the cause of it