Difference in plan and coupon

Wound I need help with deciding whether I should upgrade my professional plan to the clinic . Can someone suggest to me the difference in service and get with the clinic plan?
Also why is the the clinic plan so expensive. ?
Also is there a coupon code for the clinic plan. ?
I am single provider and a one person team with limited financial resources.
Also I tried the online chat on bot got no reply.
Very frustrated now with COvid 19 the practice is slow. Please advise and help