Thank you.

Pro is being switched on for the username you typed at checkout. It takes up to a minute.

What happens now.

Open the app.
Sign in with the username you typed at checkout.
Refresh your limits.
Open Settings and press the refresh button next to Tier limits. The Pro numbers appear there: a hundred new exchanges a month, up to a thousand people in each.
If nothing changes.
Wait a few minutes and refresh again. If the numbers are still the Free ones, or you typed the username wrong at checkout, write to us with the receipt and Pro is moved to the right account.