Put various app.alert("test1"); inside your script to check at which line script is breaking. There might be an issue with som expressions in the script.If you cant find it then share your form with me(vkatoch07@gmail.com).

Return the result as true (or any flag as per you) if the request is executed successfully in AEM workbench and then based on that value hide your field in the form.

I think there is no such property, to achieve this you need to write the script in the click event of the link/button.

I think you need to write custom validations for that.https://medium.com/@theopendle/aem-custom-metadata-forms-for-assets-8c6597205f9d 

See if this helps you,https://forms.life/2021/01/01/creating-multilingual-adaptive-forms/ 

In one of our projects, we created an email endpoint and configured a process to listen to this endpoint. Once you receive the email content/attachment in the process, you can play with this.

https://experienceleague.adobe.com/docs/experience-manager-learn/foundation/security/understand-cross-origin-resource-sharing.html?lang=en see if this helps you..

I think in the init event, the script should always take the current date from the system.

https://help.adobe.com/en_US/AEMForms/6.1/DesignerScriptingRef/WS92d06802c76abadb-3e14850712a151d270d-7ecd.2.htmlCheck this out if moduleWidth and moduleHeight can do something for you.  I added below in initialize event and its changing its dimensions:this.resolveNode("ui.#barcode").moduleWidth = "...

It totally depends upon the amount of data, it keeps growing as per the data.However, you can set the initial H*W for this.You can have some test cases for the amount of data that will come from your API and can set the average dimension accordingly.