Tested and it worked. UX could be improved by having a lightning metatag so that Alby browser extension could pick up on this without having to use the clipboard (many clickety-clicks could be avoided that way). Also, would be nice if content loaded automatically after the payment is received, no need to keep the QR code on the screen after that.

As a side note, I'm not at all convinced that QR codes are the best way to go on websites. Better way is to just have direct payment buttons like Primal (for example) has for zapping. One click and done - or 1-2 clicks more if the payment needs to be accepted in the wallet. QR codes are a good fallback if the browser doesn't have payment support extensions. 

 did you give the 'open wallet' button a shot? It's supposed to open your wallet extension with the same invoice. If you're on your phone, it'll take you to your wallet app with the invoice.  

 It was trying to open Electrum wallet, even though I have the Alby extension installed... so I think that depends on user/OS settings. Electrum has probably marked itself to my OS as "the bitcoin wallet". 

I had this same functionality on my own site working already, but it was through the Alby Lightning Publisher WP addon and it was causing other issues (backend kept crashing). Alby crew is looking into it, so I'm hoping to get my lightning donation buttons back online soon 😃