payeezy developer site issues

I want to point out some issues with the payeezy developer site. First issue the 'Send' button from the methods in the Docs & Sandbox section does not work with IE 11. I receive this error "An internal error has occurred. Please retry your request.". Works correctly in Edge, Firefox and Chrome. Second issue from any method on the Docs & Sandbox page, using default key values, click the 'Generate HMAC' button and replace the ApiSecert with any value you like for example replace with 1 or type your name then click the 'Create' button. Next click the 'Send' button the post does not fail. If you try to us the default values from these method pages in your test scenarios you will find you can us a blank ApiSecret key with the methods default Apikey and merchant ID and your data will post every single time. I believe the HMAC validate is ignored using the default Apikey found from the methods of the Docs & Sandbox page. Do not use any default keys found from these methods for testing because you may have something you think is working correctly, but fails when you change them to your own testing key values.