If I upgrade to higher plan, do I need to only pay the difference?

i just paid 190 if i need to upgrade do i pay the difference? or do i pay the new price?

I am not sure if I have understood your question correctly. Do you mean to say you want to upgrade to higher plan?

Please note that since you have active bronze yearly plan and paid through Stripe, if you upgrade to higher plan you will only be charged the difference amount.