We advise you to pay attention to the add-on for paying with Litecoin.
Litecoin has much lower fees and faster transaction speeds than Bitcoin.

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The add-on allows you to accept payment in Bitcoin to your server, without third-party services.

If you have problems configuring the Bitcoin core, we can offer you a service for installing and configuring the Bitcoin core for $100.

It is preferable to have a separate server for Bitcoin core.