First SSR

Got it with 1 guaranteed ticket from the release celebration and a 20-pull. Started yesterday, but maybe because it's right after release, I couldn't play properly and got discouraged... Loading takes forever... It's so long that it errors out, and I kept getting sent back to the home screen, which was frustrating so I closed it... It's not a device issue since I have plenty of free space and a good WiFi connection... Even when I full combo a song, it gets erased due to errors, so I couldn't clear yesterday's daily missions. I tried for an hour but couldn't even open the present box, and I have about 80 items piled up... I'll try logging in again around noon, but if it doesn't work, I might quit for a while... I want to play because the rewards are good right after release, but if it just makes me frustrated, it's pointless and I might end up hating it... I endured it for an hour thinking it's unavoidable since it's the beginning, but I'm discouraged...