Kind regards
https://bittrex.zendesk.com/hc/en-us/articles/360028996652-Market-Availability-Changes-for-U-S-Customers-6-21-19
They're most likely caving to US regulatory pressure, I think all the blocked coins/tokens/whatever had ICOs and have little to no real utility, and therefore there's a high likelihood they'll be treated as securities by the US SEC, which means it's either not possible or it requires more red tape to allow so-called unaccredited investors buy or sell them.
Hi;
I guess this is more than that. Bill Sharira was one of adviser Storm project and now...
Kind regards