Fix a bug in eCommerce (Google Analytics)

you Need to find and fix a bug in eCommerce (Google Analytics). The error lies in the fact that the information about payments sent in eCommerce using the "manual" transmission (our own requests to our server), not "tied" to the history of paid users. That is, we can't see the information about paid users: the referral source of the user, etc. Our (web service) technologies: PHP, 1C-Bitrix.

We are promising fast-growing Internet startup, the leader of its segment. We have a very strong team. We have won many awards, including the Runet Prize and First place in the competition of projects in the framework of Russian Internet Week.

The amount of work we are very tentatively estimated at 3 hours. Pay 600 rubles per hour.