Can you please share yours from @ (vkatoch07@gmail.com)? I'll have a look.

https://experienceleague.adobe.com/docs/experience-manager-cloud-service/content/forms/adaptive-forms-authoring/authoring-adaptive-forms-foundation-components/configure-forms-portal.html?lang=en   In AEM as cloud have below options, Please follow above article. Save Adaptive Forms As Drafts You can ...

You need to configure the Drafts & Submissions component. Have you seen the below article? https://experienceleague.adobe.com/docs/experience-manager-65/forms/publish-process-aem-forms/draft-submission-component.html?lang=en  

      https://experienceleague.adobe.com/docs/experience-manager-cloud-service/content/forms/adaptive-forms-authoring/authoring-adaptive-forms-foundation-components/generate-document-of-record-for-non-xfa-based-adaptive-forms.html?lang=en  

If the template is designed in AEM forms designer, then open it and see its pages or components used inside. Check if any invisible images or backgrounds are added. 

Can you please give more details?

Instead of return while validation failed, set the focus on the failed field on the form.

I think there is no limit on number of objects. In what operation you are getting these errors?

The issue with some packages, you installed any package recently then reinstall that, and then try.

Have you selected the Client Library Category inside the Adaptive From Container section?   https://experienceleague.adobe.com/docs/experience-manager-learn/forms/adaptive-forms/custom-functions-aem-forms.html?lang=en