Gmail and Photos are not working (Gmail throws HTTP error 400, meaning the URL in the extension is not the one from Gmail AFAIK). Creator should look into this, or give users an option to modify those URLs. Everything else works for me so far.
This issue should be fixed in the latest updates. If we can help you with anything else, let us know at https://apps.jeurissen.co/black-menu-for-google/contact !
