Polygon & PIXELORD NFT support

[jhxyz]

Doesn't show any polygon collections...and it doesn't display my @pixelord Metaravers NFT with music.

https://twitter.com/KJJKDCL/status/1473012735248113675?s=20

https://twitter.com/kullar/status/1484535566142263297?s=21

• a few emails to feedback@eth.xyz

JH note: this may be related to the iFrame issue.

[jhxyz]

May be related to: #25