Is there any difference with the region-specific links?

Is there will be any difference if I'll use

https://jotform.com/{FormID}
https://jotform.com/build/{FormID}
https://jotform.com/submissions/{FormID}

instead of

https://form.jotformeu.com/{FormID}
https://eu.jotform.com/build/{FormID}
https://eu.jotform.com/submissions/{FormID}

?

Functionality and feature-wise, there are no differences. The only difference worth pointing out would be the loading times, depending on your user's geolocation. If most of our your users are based in Russia, or somewhere in the EU region, then I recommend you keep using the EU datacenter and have all resources loaded from EU.

By doing so, your form URLs will use the jotformeu.com domain by default.

Great to know, thanks.