I joined the beta version
https://dexbeta.plutus.it/ Not clear if i have to make a deposit only available via bank transfer) in order to test the platform or i can just make a simple review.
Pinned txt in the telegram channel show nothing about the "Rewards For Testing" .
Would ask you to provide further details about your test-bounty program and about the App as well.
I think they are just looking for any feedback that will help with improvements to the next version of the app so making a deposit would probably help them with that but if youve already got advice then throw it their way (what you like and what you don't like). Its a giveaway, not a test-bounty program but theres a fairly high chance of winning. They recently shared it on their Telegram.
At the moment the app is just a decentralized exchange that facilitates crypto-fiat gateway between BTC, ETH, PLU and EUR. I don't think it can handle any other currencies just yet. They say they are adding the payment functionality next month so you can pay with the above cryptos at 40million stores worldwide which is pretty cool. When you want to pay it is converted into spendable fiat before going to the merchant.
Let me know if you've got some other questions?