"A trusted SSL Certificate was not found" -> But i have uploaded a SSL certificate!?

I finaly got a ssl certificate for 90 days (comodo.com)
but i have a problem: When I want to install the wordpress plugin and I clicked
under “choose protocol” [https://] i receive this error: A trusted SSL Certificate was not found
Proof link when I uploaded the certificate:
Do I have to wait because the certificate is progressing or is there a button I didnt click or…
Help! :c

I think I have to wait a couple of hours to processing that certificate.
Note: Sorry for my grammar/vocabulary, i am from Belgium so…

The SSL certificate looks valid on my end, so I think you just have to wait for your browser to drop the certificate cache.