SOMNIUM Multipay is here in BETA stage. You can join in and take a look yourself.
To join in you need to have the BSC Test Network added to your Metamask wallet. These instructions are ideal. The instructions mention how to get test BNB to use within your wallet(s). Make use of that here.
Remember this is the BSC Test Network, so you're not using your own tokens.SOMNIUM Multipay Platform