We are currently moving our shop on a self-hosted BTCPay server instance. This will give us more computing power and ultimately more control and security. It should be able to support lots of simultaneous transactions without major delays or outages.
The migration should be fully completed within the next 72 hours, as soon as we are fully synchronized with the BTC blockchain.
Meanwhile if you get any errors with automated BTC payments, you can either try again in a few minutes or get in touch via the website form so we can process your orders manually.
Have a great weekend!
Modurist Design Team