Arduino - Modifying Scrolling Sign Code from a 48*8 Matrix to a 44*7 Matrix

Just getting started with Arduino. I have a project that needed a 44 column by 7 row scrolling LED sign. I found a few youtube videos with instruction on how to make a 48*8 sign, which I followed as a starting point.

I have all of the hardware working now. Im using an Arduino UNO, 6 74HC595 shift registers for the columns, and 1 74HC595 for the rows. One of the videos gave access to their code for the 48*8 version, and using that Im getting a message to scroll on the sign. The bottom of the letters are getting cropped since its writing the message to an 8th row, which i dont have.

Can anyone point me in the right direction to modify this code to adapt it to be used for 44 columns and 7 rows?

Trying to figure out how I can post this code, but I keep getting a 403 error every time I try to paste in the code. Wondering if Im still too new to post code on this forum.