Install SSL Certificate Windows Server

Hi, I have followed this instruction (link was not allowed) to install CA on my windows server but there is 2 problem, 1) I did not receive any .cer file and 2) I have also problem with Install SSL Certificate and Assign SSL Certificate, because after filling Complete Certificate Request wizard, I can see the CA in the list (I have used .der file) but when I want to check it again there is no CA.(the CA will disappear somehow it self) and when I go to sites menu and click on binding there is also nothing for select . Regards.

Perfect! I have did it my self! The key is you should create a CRS file on your server first and then when you want to create a CA on clouldflare you shoud use your CSR.