Checkboxes - Macro not working for conditional formatting to uncheck all boxes

I am making a macro to add a new block of columns for every day in a google sheet. One column is populated with checkboxes which will be clicked by a user to mark the task as complete.

However, I have encountered serious difficulty when trying to copy and paste a new column containing unchecked checkboxes. The checkboxes do not appear at all and are somehow not recorded in the macro.

I also couldn't find a way to conditionally uncheck or check all the checkboxes in a column at once e.g. by the formula (=TRUE(A2:A50) to check them and (=FALSE(A2:A50) to uncheck them as it is giving an error.

Am I missing something or have I found a flaw in the google sheet's checkbox system?

Any insight would be greatly appreciated. Thanks