Payid19 crypto payments for WHMCS  (v1.0.0)
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Let your customers pay WHMCS invoices in USDT, USDC, BTC, ETH, BNB, TRX or LTC.
Your Payid19 balance is credited in USDT; invoices are marked paid automatically.

Requirements
  - WHMCS 8.0 or newer (PHP 7.2 or newer)
  - A Payid19 account: https://payid19.com

Install
  1. Upload the "modules" folder to your WHMCS root directory
     (the files go into modules/gateways/, nothing is overwritten).
  2. WHMCS admin > System Settings > Payment Gateways > All Payment Gateways
     > click "Payid19 (Crypto)".
  3. Paste your public and private keys from https://payid19.com/settings,
     choose a payment page design and save.
  4. Test: switch on Test mode, open an unpaid invoice, press Pay Now and keep
     the payment page open. It completes by itself within about a minute.
  5. Switch Test mode off before taking real payments.

Full guide: https://payid19.com/dev/plugins/whmcs_plugin
Questions:  support ticket from your Payid19 dashboard
