Hi and Welcome. My Name is ***** ***** I look forward to assisting you today with your question.
What versions of Windows are you using on your computers ?
On your computers, go to this website --> https://www.usa.canon.com/internet/portal/us/home/support/details/printers/support-inkjet-printer/mg-series/pixma-mg2520
Click DRIVERS & DOWNLOADS. Then click SELECT and download the "MG2500 series Full Driver & Software Package (Windows 10/10 x64/8.1/8.1 x64/8/8 x64/7/7 x64/Vista/Vista64/XP"
Open the downloaded file and follow the onscreen instructions to install your printer.
Please let me know the results.