Error in octopi plugin

Note: I am ramps 1.4 user
I am new to astroprint i just installed astroprint plugin to octopi. To connect it with astroprint account i coppied the access key then granted the permission then it appeared like it rebooted and for a second the astroprint tab appeared then it disappeared. There is a drop box (i dont know what to call a symbol which is like 4 paralell lines) like thing apperared when I clicked it i saw astroprint tab then I clicked the tab ,it went back to the place where it was asking access key. When i give the access key and grant permission it happens the same

For better way of telling it here is YouTube hyperlink