Error in required structured data element

Hello
Unfortunately, there are new warnings in the Google Console section, but we are not able to fix them despite all efforts.
I will send you 3 example of these warnings

Error in required structured data element Sample :https://bit.ly/3cv2tMS
Image size smaller than recommended size sample :https://bit.ly/2WVZIxy

The page I need help with: [log in to see the link]