Hi Marek ??
I inspected the code on the page and it appears that none of the images have had the cropped image created: https://cloud.supportally.com/3x102e3q192T
This can be a few different things:
1. The hosting company does not have the Imagick Library installed on the server. Envira uses this to grab the original image and create a new image that is cropped.
2. The permissions are the image are not set to 755 or at least 664. If the hosting company runs a script that checks/changes the permissions of the images periodically it could be that Envira doesn’t have the correct permissions to create this cropped image for you.
3. The images are housed off site using a CDN or something of this nature.
If you are not sure about any of the above, could you please go to https://enviragallery.com/contact/, log in and submit a support question please so we can continue to investigate the issue?
Thanks ??