support wpengine.com - your script doesn't work on their servers

Cookie consent solution doesn't work on wpengine.com servers. I suspect that this problem is related to their cache system. Specifically "_iub_cs-" cookies are not stored on user's browser after consent is given and because of this the banner appears again and again on each page reload. I have also opened a ticket for this matter under my account on iubenda.com For wpengine support side they say that your plugin is malfunctioning.