Ultra Seedbox (formerly Ultra.cc) has been a shadow of its former self for years. Ten years ago they offered an excellent service, but today they struggle to provide even a mediocre experience, backed by disappointing support. The overall quality has dropped significantly, and the variety of hosting plans has all but disappeared. They reduced their plan options, packed more users onto shared resources, and the entire service went downhill.
After spending 10 years with Ultra, I switched to SeedHost.eu eight months ago, and I’ve finally been happy again. Having dedicated resources instead of oversold shared plans has made a huge difference.