Pictures in HEIC format

Need help!
After the incident of April 20, 2021(, I can no longer see the pictures in HEIC format.
I can only see JPEG pictures.
What can be done? This also happens from the Chrome and Firefox browser and from the application for Android and Iphone.
Thank you very much for your help!
Have a nice day!

You don’t seem to have a My Cloud Home and have a MC EX2 Ultra instead. If this is indeed a question about MCH in this MCH forum, then refer to this: