Something has got lost in the process, somehow. Not sure who’s running this Beta with you, but if your mail didn’t give you specific protocols to follow, or even just a single point of contact to reply to by mail, then they have done a poor job of handling your involvement.
When I was invited, because the Beta portal was not yet available, still isn’t to UK users, my email was very clear in terms of what was expected of me.
I had a single point of contact, and my report was to be sent to this same representative, following a strict testing protocol, which was also issued by the same representative in the content of an email. The report allowed for inclusion of additional comments with regard to general observations, and thoughts, about how it might be improved.
On the test I was involved with, everything did function as they said, and I reported the same, but I also noted that it was not entirely intuitive, without a clear set of instructions, and I suggested a number of ways in which this could be improved. Not sure if any were acted upon, because I haven’t noticed the release yet.
If your mail was not handled in the same way, then I would suggest someone dropped the ball.