Finish Easy Digital Downloads (WordPress Plugin) payment gateway for MyCelium Gear (Bitcoin)

I have almost finished a payment gateway Addon for Easy Digital Downloads to enable purchases trough MyCelium Gear (Bitcoin Processing without a Middleman holding your Bitcoins) I based it on the PayPal Standard Gateway [login to view URL] that comes with the addon and on the Geary project I found on Github that uses the Gear API with PHP [login to view URL] I have made a small modification to it to submit the custom_data when placing a order. I use this to transfer the $payment_id. I currently have the redirect working, payments get accepted but the callback is not working for some reason. You are required to: 1. Setup a WP site with EDD Plugin and the Gear addon I wrote. 2. Setup a test download so you can test the purchase process. 3. Setup your own MyCelium Gear Gateway, enter the gateway_id and secret on the easy EDD Gateway setting on your WP Admin. 4. Use a Bitcoin Wallet to test Purchases, I use Electrum. You can use the TESTNET Blockchain to test and not waste transaction fees. I had to setup to have enable higher transaction fees, with default setting it always told me that the fee is to low when I tried to pay. 5. I currently have a issue that the check_order_callback() function returns empty. I have put in error message collection that collects the errors on the EDD->Reports->Logs->Payment Errors page in the WP Admin. You should be able to find out why its not working. I have a record that actually has the desired array with the expected data recorded. So based on that I had it working on some point. I have the project hosted on [login to view URL] on a private repo. If you can register there (its almost like Github) that would be great but I also can just send you a zip. It may be worth it to test Geary without any WP and EDD just to check if that working with a minimalistic PHP setup. I have not done this. The Gear documentation also tells that its possible to set it up without actually redirecting to Gear for payment. I would love it if you could make that happen but its not a must. It may actually help to solve this issue as well. I actually plan to sell this Addon when its ready. I can't keep you from also selling it because its GPL 2.0 code but I would appreciate if you won't. I already spent ton of hours on this and actually not even expect many people to pay for the other WP Addon I sell in Bitcoins much. Just got stubborn about it and want to help the Bitcoin world move forward.