At the time of writing this article (April 2021) there is a known issue with the Intel Iris XE / Iris Plus Graphics G4 GPU found in various Windows devices, such as the Microsoft Surface Pro 7. This results in the Foldr web sign-in window appearing blank and not rendering correctly.
This is caused by a bug in the Intel driver and the underlying web browser subprocess used by the Foldr app.
To resolve this issue, enable the Software Render option in the app by creating a registry key
Open the registry editor ,by searching for ‘regedit’ without quotes, or right-click the Windows/Start button > Run > type regedit and hit enter.
Accept the User Access Control prompt, if shown. The registry editor will appear.
Expand Computer > HKEY LOCAL MACHINE > SOFTWARE > Foldr > Default. Right-click on Default and select New > String Value
A new registry key will be created and this should be named SoftwareRender as shown below.
Double click the newly created SoftwareRender registry key and give it a value of 1
Click OK. The registry editor can now be closed.
Relaunch the Foldr app and the web sign-in UI should display correctly.