Why has he left me on delivered?

I met a guy on tinder, got banned (no idea why) and met again on bumble, we had good conversations spanning over a few days and we decided to move it onto snapchat. We were talking on there for 3 weeks but then over the weekend he's just left me on delivered. He has a busy schedule but that has never stopped him from having at least some conversation with me. I tried to message him through out the weekend but he's not replied. His snapscore went up on the Saturday but not on the Sunday. Im so confused as to what has happened?

Why has he left me on delivered?
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