Hi! I just participated in this test:
I used Firefox 94 64 bits and Chromium 95.0.4638.69 on Linux Mint 20.1. My internet connection isn't great. The page took a while to download, certainly over 5 minutes, then it opened on both browsers.

I followed whole the tutorial and included some pictures of the process and the browser console output:

Here I'm choosing a username. I noticed it allows you to insert blank spaces. A space at the beginning didn't let me create the account, but since it's difficult to notice, then it could bother certain users.

Here is the look after I did an exchange. It was successful and worked immediately.

And this when sending 0.001 Hive coins to son-account:

As we can see this last process didn't go through well and it's generating exceptions.

On the tutorial, the part when transferring Hives to the network seems a bit confusing, as the transfer form looks the same as the form in the page we're testing, except for the color. So it could be interpreted by some users as sending money from the PeerPlays frontend.

I can give you some feedback on the user interface. It's not difficult. Perceived usefulness and perceived ease of use are the major basic factors that prompt the acceptance of a software technology. This meets these criteria in my view, although I think we need to run a poll with specific indicators to figure it out for sure. Nice initiative, keep it up.