Unfortunately, these icons are used for the design of the theme and there is no way to store them in the database. What is more, it is not even close to recommended, because it will take way too long to load them and display them when a page is opened. This is the same with every theme. When a new version is released, the new theme should be used.
One way I see you can avoid copying these icons every time, is to add them on your root folder of your domain for example and then in the "Custom Head Styles", you should add the css for referencing them via url. This will work in case that when upgrading your store, you do now delete the entire root folder with all files.
The other way is to convert the icons to base 64 format and add the css for using them in the "Custom Head Styles" textbox of the theme. Thus on each upgrade the custom head styles content will remain and the icons too.
Hope that helps.
Thanks for the feedback. We have identified what the issue is and it will be fixed in a day or two. I will let you know once it is done so that you can merge the fix.
Sorry for the late reply.
Would it be possible to let us know what language is used on this website so that we can check whether the font used in the Nop Traction Theme supports that language. If not we can tell you how to replace it with a font that supports the particular language. As you know every font has support for several languages and it can always turns out that a given language is not supported.
Looking forward to your reply.
I have explained the situation in this forum post.
The reason why you are experiencing these issues is because of the fact that the Smart Product Collections plugin is included only in the Nop Pavilion Theme. Thus it is styled for this theme only except the Default Clean one. Please note that plugins that are not part of a theme may not be designed and styled for that theme. As we have 24 themes and more than 25 plugins, it is really hard to have all plugins styled for all themes. So that is why plugins not included in a theme are designed and styled upon customer requests.
Would it be possible to submit a ticket and let us know if you intend to use the Nop Smart Collections plugin in any theme different than the Nop Pavilion Theme and Default Clean.
Thanks for your cooperation.