Broken images sitewide viewing in PC Chrome but it works fine in mobile devices/ certificates issues too

Site URL: http://rominasantanaart.com

Hello everyone, I have my portfolio website with broken images, which is really nerve-wracking. The images are showing correctly in my android device, but not in my Windows PC in Chrome.
I've checked I have the lastest Chrome update. Also when I tried to replace the broken images it doesn`t let me do so.
I cannot update my windows system, so that's not a posible solution.
I can also see the certificate DST Root CA X3 shows as expired, how can I fix it?
I really appreciate any help on the matter since I have sent emails to publishers with my portfolio link and they are not going to take me seriously with a website full of errors...
I have emailed the support team as well but since they don't work during weekends,(which is totally understandable, I work in a support team for another company)  I'm afraid this may take a bit to be resolved.
 

See this thread:

Thank you, do you know this is causing the broken images too?

As I can see the images on your site with no issues I would say the answer is yes.