Looking for logging into the Google Sites Box site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Google Sites Box site. After that you can login as usual with your login credentials.
https://sites.google.com/site/authprodemo/login
https://productforums.google.com/d/msg/sites/iJvT4X3q1xA/2LPOrD_cCQAJ
https://www.youtube.com/watch%3Fv%3DuJv2CFRRQ6Q
https://www.youtube.com/watch%3Fv%3DrVxTVc9XNAs
https://www.youtube.com/watch%3Fv%3DxGqy78zAk1o
https://www.youtube.com/watch%3Fv%3DmmeLQZXmDRM
https://www.youtube.com/watch%3Fv%3DC-Jz_Nrqk7Y
https://developers.google.com/sites/gadgets/site_gadgets
https://support.google.com/a/answer/184005%3Fhl%3Den
https://www.jotform.com/help/19-Adding-a-Form-to-Google-Sites
https://www.powr.io/tutorials/how-to-add-membership-form-widget-to-your-google-site
https://www.123formbuilder.com/docs/google-sites/
https://www.uis.edu/informationtechnologyservices/wp-content/uploads/sites/106/2013/04/Introduction-to-Google-Sites.pdf