After your purchase, the upgrade will automatically start once the purchase is complete in the paypal payment process
It's up to you to get the number of referrals now to arrive at the price estimate.
Based on 5 ads and with a difference of 5 inactive referrals. As a result, revenue will vary due to the number of ads that will increase. Currently we have + 5 ads and with 0.01€ PER CLICKS and 0.0250€ PER REFF