After installing Picsee browser extension, if you use it immediately, a dialog "Picsee is not open" will pop up. This is because Picsee browser extension must be using with Picsee APP, which must be installed and opened firstly...
The mechanism here is that Picsee browser extension collects images, videos, and post to Picsee APP, which will save images or videos to the folders. So when face to this dialog, Please check:
After excluding the above points, the dialog is still on, please communicate with us in the following ways.