I have tried Google Chrome regular and incognito plus Firefox - all have the same issues. I have tried more than one project.
When I select an icon to add - it just spins and a message appears at the bottom that it was not able to add it. I can add a shape but not an icon. just spinning blue circle. I don't even get the error message at the bottom of the screen anymore.
Around the same time, I suddenly could no longer access the Align option. It was working fine then became grayed out.
The lack of icons stops me from using the product for my project.