Verify you're using the email address from your Fieldsity invitation
Try Forgot Password to reset your password
Clear browser cache (web) or force-close the app (mobile)
Check your internet connection
Common errors:
"User not found" — Invitation may have expired. Contact your company admin to resend.
"Account disabled" — Your account was deactivated. Contact your admin.
Stuck loading — Force-close and reopen, or hard refresh (Ctrl+Shift+R / Cmd+Shift+R) on web.
If none of these work, contact support through the chat widget.