Illustrator 2021 v 25.2.1 (64bit) Error when opening .SVG from Canva

Attached is the error I get when opening a file from my brother who is using canva. After the file is open everything looks just fine but when i go to save as .PDF for printing (editing turned off) and when i save as .PDF with editing, both files do not show the imported art in the explorer preview nor does it show when the file is opened. It does however show the TEXT that was imorted. The ONLY workaround i've gotten to work is to rasterize the layers which reduces the quality. 

Is there something off with my SAVE AS presets? I also saw a msg about matching my transparency with the output when i tried one of the various save preset options. I've never had this issue with all of these charms until he started sending me designs from Canva. 

Note: I'm opening the Canva file in it's own window and copy/paste into my template. Not dragging directly into my design.

Q1. What is causing the import error. (see attached). Is this a problem and/or is there a solution?

Q2. Is there a correct PDF save oprtion (Preset) I should be using? Somehow it got changed to (Custom) by default. Is there a way to save a new default preset? (High quality print )preset gives me the one with no artwork. I just tested the old charms with no Canva import and they save prefectl fine using the High Quality option.