Thanks, I didn’t know about this. I had never tried IPN with IP addresses instead of domain names.
To clear up any confusion:
Every time you send cryptocurrencies to a deposit address, CoinPayments will do an HTTP request to your site. We need to know 1) if it is being sent and 2) if it is being received. The “IPN history” page allows you to see both of these things. The screenshots you sent earlier indicated that no messages were being attempted. Probably due to the missing trailing slash.
At the very least you should now be seeing IPN attempts on CoinPayments, even if the messages do not arrive at your site.
Let me know how it goes.
regards
Alex