I see from your screenshot that you have the AirPrint version of the printer installed. You do not want that; you lose most of the benefits of the Pro-100.
Have you installed the latest Canon driver from the support site? If not, download and install.
Click the plus icon "+" to add a new printer and wait until the Canon IJ Series printer appears; it could take a few minutes. Then you can remove the AirPrint version.
Pro 100. Yes 5x7 is supported.
4 x 6, 5 x 7, 8 x 10, Letter, Legal, 11 x 17, 13 x 19
Bay Area - CA
~R5 C (22.214.171.124) ~RF Trinity, ~RF 100 Macro, ~RF 100~400, ~RF 100~500, +RF 1.4x TC, +Canon Control Ring, BG-R10~DxO PhotoLab Elite ~DaVinci Resolve ~Windows11 Pro ~ImageClass MF644Cdw ~Pixel 8 ~CarePaks Are Worth It
As you noted, this "false" paper jam has often been reported with the Pro-100 in the past. For some reason, the error can often be cleared and the print successfully made after running a Roller Cleaning from the Maintenance section of the printer preferences. Unfortunately the problem may recur at a later date, but another roller cleaning will likely resolve it again (until the next time.) These ink jet photo printers are complicated beasts.
12/05/2023: New firmware updates are available.
09/26/2023: New firmware updates are available.
08/18/2023: Canon EOS R5 C training series is released.
07/31/2023: New firmware updates are available.
05/18/2023: New firmware updates are available.
03/30/2023: New firmware updates are available.