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"Error: Invalid session"

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I got the email about Firefox Monitor, entered my email, then my pw, and got "Error: Invalid session." First, I have no idea what that means. Second, I am immediately discouraged from having anything to do with Firefox Monitor. Don't I have enough hassles in my life?

Chosen solution

Hello,

I'd try clearing your cookies and cache first.

If this doesn't work try accessing it via Safe Mode or turning your add-ons off.

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Chosen Solution

Hello,

I'd try clearing your cookies and cache first.

If this doesn't work try accessing it via Safe Mode or turning your add-ons off.