Hi! I am a PhD student hoping to use Roboflow for my research. I had upgraded to the 50 research credits and then tried the free trial so I could have access to the private dataset feature. Now the free trial is over and I don’t have 50 credits per month anymore, only 10. How can I get back to having a research account? Also, if I choose to purchase a premium account to have private datasets, will this demote me to have less credits or will I still be able to have 50 credits?