Your interface looks great!
I like the way you embedded Cosmic.link. If you want, I can provide an alternative style for better integration.
I have a couple of comments about StellarPay interface:
The footer is breaking the layout on my display (1366x768, chromium), you can fix it by removing the -15px margins from the
.row class and adding
For SEP7 requests with memo, you need to define the memo type as AFAIK the standard doesn't define a default:
Beta Trezor support will be released the 28th. Payments are already fully functional.