c# winform application webview2 getelementbyid focus need

Please see below my program I am want filled the form then click next button. my code working filled & also success click next button but when next button click then show error see error: Enter a valid address, number, or name. address ok but it's show this message but when I am click then inputbox using mouse click then it's go next page mean every time need click mouse click in the filled box area. I am don't understand how I am mouse click in the box. I am don't need using sendkeys for this purpose so if you have solution without sendkeys then bid the project. Just you show me it's going next page without any sendkeys using & it's working well. work Very simple if you expert in the line. Project video see after we select you.