Tamiya is being forced to relabel thanks to the state of California deciding that otherwise we might drink it or some such. Just a re-label which has been slow due to the way the bureaucracy works. It's on it's way back, basic colors are coming back in, which is good as I'd run out of flat black and flat white.
MM acryl doesn't brush as well as Tamiya. For hand work I use Vallejo.
You can get paints via UPS or Fedx, just not the US post office. They came down hard on any amounts of liquids. It used to be that model & art sized paint containers were exempt but not any more.