upgrade from membership to membership 2 pro

i have the old membership plugin installed and about 47 users... i would like to upgrade to the membership 2 and when I try to install it says failed because the directly membership already exists...

I am also struggling with my original membership plugin and paypal express... when it ends their 14 day trial and supposed to upgrade them to the next subscription level... I have changed the price and it keeps charging the orginal price of that level.... how do I change the amount that paypal charges them?

Details... I used to have the trial and then a 29/month subscription..
I lowered the monthly to $19 and i cant seem to get that to fire the lower price to people who signed up when it was 29