I click on menu options and sometimes get the below message. What is the cause? Apologies if this has been covered somewhere else.

Renata_Halstrom [4408629] Level 11 Never Cold NVC Outsider
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I click on menu options and sometimes get the below message. What is the cause? Apologies if this has been covered somewhere else.

All works perfectly on private browser mode! Thank you for your help :-)
I'm using Firefox, but have tried in Edge too. FireFox has Privacy Badger, but that's about it.
I click on menu options and sometimes get the below message. What is the cause? Apologies if this has been covered somewhere else.

New and need all the help I can get! So much appreciated!