I can't believe the cultlike apologists in here. Get a grip.
You're downplaying how important of a feature this is for some people just because you don't use it. Some people have paid for premium primarily for the access to trading. You're talking as if we're being greedy for asking for compensation like we had any choice in the matter. If sega had given me the option for a refund the second trading went down I would have cancelled premium and taken the refund. I didn't want to play for a whole month with broken premium features, I was forced to because I had already purchase the subscription prior to the feature going down. I didn't have the option to pause premium while they fixed the only feature I cared about or I would have. I'm not double dipping, I'm just asking for what I paid for. If they credited just trading, not premium as a whole that would be fine. I didn't pay for SG or 100% triboosts, I paid for the ability to trade.
If the shop was down for 3 weeks and they issued you some triboosts and gold Tokyo keys instead of 3 weeks worth of shop passes would you be okay with that?
"if you don't like it - you take your money somewhere else."
And that's exactly what people are doing. The nasty community and poor dev response to issues like this are killing the player base. Keep encouraging people with valid complaints to leave and you'll find yourself playing a dead game.