OK so I got latest version of everything installed. I registered at GoURL, created two boxes (BTC and LTC), pasted keys into GoURL Settings bitcoin and litecoin. Callback URL has been pasted to GoURL.
Now when select bitcoin and hit donate at http://www.hardwareinsights.com/wp/support-hardware-insights/ nothing happenes, site just reloads.
I noticed that after clicking Donate now for the first time and selecting the Bitcoin/Altcoin radio, it shows loading but the URL under te Donate now button is still http://www.hardwareinsights.com/wp/support-hardware-insights/?payment-mode=paypal. Should not it be something else? When I change the mode to anything else than "paypal", a form for credit card credetials appears.
https://wordpress.org/plugins/gourl-bitcoin-payment-gateway-paid-downloads-membership/