1. You can not authenticate using incognito mode in your browser.  Please use another profile if you need to in your browser.

Chrome: https://support.google.com/chrome/answer/2364824?hl=en&co=GENIE.Platform%3DDesktop

Safari: https://www.macobserver.com/tips/how-to/setup-and-use-multiple-profiles-on-safari-browser/

Edge: https://support.microsoft.com/en-au/topic/sign-in-and-create-multiple-profiles-in-microsoft-edge-df94e622-2061-49ae-ad1d-6f0e43ce6435

2. If you deleted default fields or modules like LEADS, MOBILE or PHONE you must remove them from the settings