This is such a nice game, very addictive. Unfortunately, I had a bug where at some point, where the orbs that I collected in a run were not added in the shop so I couldn't buy any more upgrades.
ok, so I collected orbs, died, and in the upgrade menu, the orbs were not more than before, sometimes even less. so no matter how many times I went in for another run, no matter how many orbs I collected, I was not able to upgrade anymore. Maybe the issue is that I played on Arc browser instead of Chrome?