Maxim, good day
sorry, missed that there is no answer here.
tell me, did you solve the problem?
if not - I give hints:
1) you started the description with the fact that there is an online form -
https://bit.ly/3Wmb1x6 which the client fills out, at the end of the form the client chooses what type of payment he wants. From a development point of view, this means that the client has not yet been identified by the system, so no personal results can be transferred to him. We receive them after filling out the form
2) you also need to fill out the form for the first time and only after that do the necessary calculations and send the result to a contact we already know. Here it is possible only to channels via email/phone/messengers/office