Basically everyone works by clicking on web page elements by sending a script
document.getElementById(''name id'').click();'
If it doesn't work in your case, you can try the script to get to the element not by ID, but by Class
An example of the script below:
EdgeBrowser1.ExecuteScript('document.getElementsByClassName(''ev_tab_title display active '')[0].click();');
Or via querySelector
For example like this:
//sJavaClickEnter is a string variable to which we assign the script string
sJavaClickEnter:='var elem = document.querySelectorAll(''.input-addon.btn.btn-default.fileinput-exists'');' +#13#10+ 'elem[1].click();';
EdgeBrowser1.ExecuteScript(sJavaClickEnter);
If this doesn't help either, you can move the mouse cursor to the element and programmatically make the mouse button click
SetCursorPos(500, 70); //coordinates where to move the cursor
Mouse_Event(MOUSEEVENTF_LEFTDOWN, 0, 0, 0, 0); //press button
Mouse_Event(MOUSEEVENTF_LEFTUP, 0, 0, 0, 0); //release button