First of all, thank you for choosing our products. We really appreciate this.
As described here, the multi-license is for 5 sites
Please read this page before doing the order
To upgrade, Please do this 20$ order and contact us
We will update the current order manually from single to 5 sites extended
What to do after we apply the upgrade for you?
Please check your account on our website and also check your email inbox
Note: There is no need to re-install the plugin again on the first website because the difference between licenses is just on how to use and on how many sites can be applied