Did you created an offline app using html files?

Yes, Of course, your app will get published on Google Play only when you publish it.

Better you can debug to get exact issue:
https://websitetoapk.com/docs/debugging-with-chrome.html

As a web developer you must understand that external data and content requests are never cached as data on server can be changed. Everything is working correctly, you're expecting too much to be done just with available caching option.

@JOHNNY inside We will be releasing an update with latest API Level 28 before deadline of 1st August.

Kindly raise a support ticket with your registered email on link below:
https://websitetoapk.com/support/submit_ticket

You can so the same by editing your WordPress theme using theme editor. You won't be able to do that in case you have no access. In future releases, we might implement a swipe-to-refresh feature.

@LuisGarcia , Yes, as always, we will keep the software up-to-date with latest Google Play guidelines.

That is simply because you have used some unauthorized (pirated) copy of our software to create this app. You need to purchase the genuine premium version of our software to avoid this error in future.

Can you please also share your Google Play URL?