Yes, you can cash out automatically to a lightning address (not on-chain currently, although as mints support on-chain, this will be possible too!). If you have woocommerce store with a btcpayserver plug-in, it works out of the box, yes, precisely because it is compatible. For this specific scenario there is also a WordPress plug-in that will setup cashupay and configure the btcpayserver plugin automatically, so you don't even have to upload anything manually, just install the plugin and your integration is autoconfigured. For other services you use the btcpay plugin compatibility exactly as you described.

The biggest threat to the circular economy isn't regulation, but laziness. We outsource our payments to "convenient" gateways because we're afraid of the tech stack. CashuPayServer was built to kill that fear. It’s a lightweight, PHP-based Lightning gateway that settles via Cashu. It’s as easy to install as a contact form and as private as a cash transaction. Don't wait for the "official" circular economy. Build it on your own server today.

If you need a KYC'd third-party gateway to accept Bitcoin, you aren't using Bitcoin. You're just using a slower, more expensive version of Stripe. Good for adoption for clients, but if you are a merchant, you're missing out. True sovereignty means owning the checkout. CashuPayServer lets you accept Lightning payments directly on your own WordPress site (or anywhere where BTCPay is supported - prestashop, ...) without asking a corporate middleman for permission. Yes, it runs on your $5/month hosting that you already have. No node/VPS/docker required. Just install as wordpress plugin or unzip (in case of non-wordpress install), configure and you are good to go. https://cashupayserver.org/

Privacy isn't just for customers; it's for merchants too. Why should your payment processor know your turnover, your products, or your customer's identity? CashuPayServer uses Cashu mints for settlement of Lightning payments. This creates a "privacy buffer" between your shop and the network. The mint sees the Lightning payment; you see the credit. Nobody sees the link between the two except you. Why Cashu mint? The easiest way to accept Lightning and not run a Lightning node. And yes, it can immediately withdraw to a real non-custodial Lightning wallet. Accept Lightning with "Stealth Mode" enabled.

Can most shared hostings run C# code? And which remote ln node? Blink?

Agreed that it is possible, but it's not only install. You need to maintain it. Their page mentions only VPS for $10+, do you have tips for $2-$5 VPS? Might be useful for other projects. What Lightning node do you use in this low-cost setup? Anyway - the point of CashuPay is that it can run on what you already have (PHP hosting for your e-shop). You don't need anything extra, not even $2 VPS. Just unzip and go. P.S.: I am fan of BTCPay, if it's not a problem for you, run it, I also run one. This project is for people for whom the more complicated setup is a barrier to accepting Lightning.