Lookup not showing in my SP form

I added the lookup control in my SP form.

And made the below settings -

After saving, this is what I'm getting. I don't have the drop-selection.

Am I doing it wrong. Please help. Thanks again!

Hello @Jamail_Serio,

Please completely clear the browser cache.

Also check the app package version in the app catalog

If it's below, you'll need to update the app package. You'll find the instructions here:
Update the app package for Plumsail Forms (SharePoint Online) — SharePoint forms