Thanks for the additional information.
It seems pretty straightforward, I reached the first ceiling (Max contribution $3867.50) and entered the amount in box 16. i reached the second ceiling (Max contribution $188) and entered that amount in box 16A. In Box 26, i entered the max pensionable earnings for 2024 ($68500). I even tried entering the additional maximum earnings amount ($73200) but that didn't change anything.
I don't understand why i entered the amounts in the T4 section but they don't appear on line 30800 and then they appear as an over payment at line 44800 therefore affecting the bottom line with a refund. My filing is pretty simple, i literally entered the amounts from my T4 and nothing else.
