I'm going to have to try from a desktop. I clicked on the box, then the quotation marks , then the paper clip - still nothing 😱
I am using "Full view" (not mobile) version on an android phone. This is what I see when replying
Click "go advanced". This is what you should see
Click on the paper clip (not arrow). This should open a new tab - uploading page
If you want to upload from phone's storage, click "choose file" then upload. You can upload one by one or choose a number of pictures then upload at once.
When you quote a post, you will have the same options as "go advance"