unless something has changed in your country, each item is assigned points. These points determine which level of the plan you can acquire. Is that no longer the case? Are they asking for specific lens types now?
As I'm looking at the Canon US site, it only requires 10 points of qualifying items for Silver, and that's all products, lenses, bodies, accessories and even printers, Gold is 20 points, and Platinum is 50 points. Your R5 grants you 12 points all by itself.
As for the R5, I had issues with mine and had to take it in for service. They wound up replacing the main circuit board, the entire back plate, and even put in a new sensor. So, for $350 (including the 30% off for my membership, I essentially have a brand new camera. The nice thing about the membership was having a loaner from the time I dropped it off for service, until I returned to pick up my own camera with no questions asked. Plus, with a business I can write off the membership fees at years end.