How to implement a check by order of IM in PVZ / Retail (fz-54) with a laptop, kkt atol 11f?

Question

Online shopping

Good afternoon!
We have:
1) IM on 1s.Bitrix for accepting orders with the atol.online service if payment is made on the site
2) 1C UPP 8.2 ed 1.3 (aka enterprise 10.3) for accounting for goods, placing orders, sales, and other accounting.
3) Retail stores with laptops, kkt atol 11f - do retail sales through atol xpos There was
a sharp question how to break through the check for IM orders through retail stores using the same technology.
Went through a bunch of services and really did not find. We know about Retail 2.x, but it is still difficult to implement synchronization, and 9 stores either have or do not have Internet.
Buying additional equipment like Evotor, which is synchronized with the 1st one, is expensive.
Through a retail program, stuffing goods from an order manually is digging a hole for yourself. IM prices may differ from retail prices, which means that cashiers should be given the opportunity to edit the price.
Launching 1C via remoteapp is also a so-so solution - the Internet may not be available at the moment when the buyer comes for pickup.
Help me please!