To sign in, use your existing MySonicWall account. To create a free MySonicWall account click "Register".
I think this question may have been asked and answered in another thread. Can you check out https://community.sonicwall.com/technology-and-support/discussion/77/sonicos-management-not-working-on-chrome-v80 and let me know if it answers your question?
VP, Web and Digital Experience, SonicWall. Get my attention by tagging @Terri on the Community.