I used the mymini command after installing it, before formatting anything. now i have a cooldown for 24 hours, and cannot test what I have done. I have tried deleting myself in the data folder, but it keeps readding me. Is there any way to clear my cooldown?

Make sure you are deleting the data when the plugin is unloaded or server is shutdown, otherwise it is written again from memory.

Also be sure to assign a cooldown tier eg. spawnmini.tier1 or it will default to 24 hours.