Website down after purchasing a SSL Certificate. - may take up to 72 hours.

[MargieH]

I bought a SSL Certificate on 16 July 2018. The tech lady checked the site and reported that there were no issues with my site. She advised me that it may take up to 72 hours and that there may be technical issues during this period. However, it is now 20 July and the website just shown a blank page. The SSL chap said that he would see if the site needs bebugging and this did not work. They now want me to pay for someone to fix this for us. 

[lindzbob01]

I'm having the same issue. Can't access my site at all now that they installed my $150 SSL certif.  I keep getting the 

This site can’t provide a secure connection

_________________________ sent an invalid response.

ERR_SSL_PROTOCOL_ERROR

message on Chrome, on every device, and it's equivalent on every other browser. I can't even get to my own site to try and update it.