Go to the menu with three dots in the upper right corner, then select Settings.
In the search box, type "compatibility".
Under "Let Internet Explorer open sites in Microsoft Edge", set the dropdown to "Incompatible sites only (Recommended)".
Under "Allow Sites to be reloaded in Internet Explorer mode", set the dropdown to "Allow".
Under "Internet Explorer mode pages", click Add and put in the browser addresses you need from SharePoint.