Looking for logging into the Sign Up Use Case 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 Sign Up Use Case site. After that you can login as usual with your login credentials.
https://www.cs.scranton.edu/~bi/2010s-html/se521/grp2-usecases.doc
https://inf.mit.bme.hu/sites/default/files/materials/category/kateg%C3%B3ria/oktat%C3%A1s/msc-t%C3%A1rgyak/modellalap%C3%BA-szoftvertervez%C3%A9s/11/ActivityModeling.pdf
https://creately.com/diagram/example/iuczlwfq1/signup%20login
https://creately.com/diagram/example/igtwgvok1/New%20user%20registration%20and%20login
https://www.quora.com/Is-login-sign-up-a-valid-use-case
https://www.gatherspace.com/use-case-examples/
http://www.cs.utexas.edu/~mitra/csSummer2012/cs312/lectures/login.html
https://www.smartdraw.com/use-case-diagram/
https://www.bridging-the-gap.com/what-is-a-use-case/
https://www.youtube.com/watch?v=zid-MVo7M-E
https://medium.com/@sarahelson81/test-a-signup-page-problems-test-cases-and-template-49732f546759
https://online.visual-paradigm.com/tutorials/use-case-diagram-tutorial/
https://instapage.com/blog/sign-up-page-design