In order to manage Blog Tag Cloud in Magento 2 Blog, please go to the Admin Panel > Stores > Configuration > Magefan Extensions > Blog > Sidebar and find Tag Cloud Widget section.
Tag Cloud Widget
1. Enable or Disable the widget.
2. Set the Sort Order to manage the position of the widget on the Storefront. The higher the number of the position, the lower it will be displayed on the Sidebar.
3. Specify the Number of Tags you want to be displayed in the Tags Cloud.
Once you've finished don't forget to Save Config and Flush Magento Cache.
4. Check the blog Tag Cloud out on the storefront.
Animated Tag Cloud Widget
In the animated version of the Tag Cloud, you Enable 3D Animation and see new appeared options.
1. Set the Color you want the tags to be displayed in.
2. Specify the Cloud Height. It determines the hight of your tag cloud animation block.
Once you've finished don't forget to Save Config and Flush Magento Cache.
4. Check the Animated Tag Cloud out on the storefront.