@Robert_Strouse - You could almost any QR code generator to direct someone to a link (I tried https://www.qr-code-generator.com/ and it worked just fine).
As for voting, according to the Voting Help Centre article, the voting app only works on the full desktop browser, desktop app, and tablet app. While users could technically force “desktop mode” on their mobile browser, I would not advise going that route.
Other than using the voting app, the next step would be to use dots/circle shapes to vote on items. However, again, the mobile browser experience of trying to select and move objects is quite poor; pretty much unusable, in my opinion.
I would suggest exploring another tool for voting for the scenario you have described, e.g., Mentimeter or Google Forms.
Thank you @Robert Johnson - Maybe this will become a feature in the future...