Site not showing Metamask login; collector had a hard time closing private listing

Hello, yesterday I created a private listing for a collector. When logging into my studio, however, MM didn’t show up — only base and walletconnect. I logged out, refreshed, logged back in, and MM was there. I didn’t think anything of it but after I made the listing, my collector had the same experience on his end. This seems like it might be an issue with the site?

Also, he said to me that Rainbow should be supported.

Are there multiple wallets installed? ie something like Phantom? That could be what is causing some issues for you