The free version has limits as described in this article. There are no limits with the paid/full version.
Just add the number of users under Team in the payment form.
Please read this article.
Yes, you can add additional users under your management. More information can be found here.
Yes, you can download a quote from the payment form.
Usually payments are registered instantly, and you can use the full version of Walution add-on immediately. However, sometimes the payment provider's system might take several minutes to inform us that you have paid.
No, it does not matter which email address you use with your payment provider. The payment is always connected with Google account that was used to install Walution add-on, or the email address entered in the payment form.
Yes, each license is granted to one account only. However, if you would like to grant access to a number of users you are eligible for a volume discount. You can calculate your discount by filling out the payment form.