Refer to the below to give proper privileges and roles for your user group to work with the template and forms. https://docs.mktossl.com/docs/experience-manager-65/content/forms/manage-administer-aem-forms/forms-groups-privileges-tasks.html?lang=en  

Have you copied and pasted the content from somewhere inside the short description field? It seems like taking the rich text. Try to remove the whole text and then type a single word and check. Take a fresh field and add a single word in short description to check.    

You need to write the code to dynamically populate the second dropdown on the change or exit event of the first dropdown. eg.: Need to create the mapping like the first dropdown has the country and the second dropdown has the city for that country.   India > Mumbai, Delhi Australia > Sydney, Melbour...

Seems like an issue with your data binding in the table row, need to check your form with sample data to resolve the issue. Share form and sample data if you can.

With another tool, I don't know if it's feasible or not, but if you want to replace some code then you can open your form in AEM Designer and go to the XML Source tab, where you can find and replace any script code.    

In your form, in some fields, there are more than one para element. It should be one in any field. Which is causing this, removing the same will fix this issue.      

On git changes, you can create the pipeline in Cloud Manager. refer this: https://experienceleague.adobe.com/docs/experience-manager-learn/cloud-service/cloud-manager/cicd-production-pipeline.html?lang=en  

Please go through the below example, you will get an idea about javascript.   https://help.adobe.com/en_US/livecycle/10.0/DesignerScriptingRef/WS92d06802c76abadb-3e14850712a151d270d-7ffa.html  

Please have a look:  https://experienceleague.adobe.com/docs/experience-manager-65/content/forms/adaptive-forms-advanced-authoring/working-with-adobe-sign.html#    

If you want to change the data on the events of different fields and then put it on the respective event of that field, eg. change or exit event of the dropdown.   Another option is, to take a button on the form and call your main function on the click event of that button and check the different fi...