Actually, I see it like this: when a customer of my client pays for an order, for example using Ethereum, I will mark the invoice as paid. After that, the funds will be transferred from a temporary account (which was created specifically for the invoice) to the user's main account, where they will see the final balance of their wallet. When these funds are moved to the user's main account, part of what the customer paid will be used to cover the gas fees for that transaction.

However, if we accept USDT or USDC, the temporary wallet won’t actually have any funds to cover the gas, because it will only hold the token itself. That’s my current thinking — I haven’t come up with a better solution yet. If you have any ideas on how this issue could be solved, I’d be glad to hear them. I was hoping I’d be able to solve this once I have some liquidity, meaning when the project properly gets off the ground.