I assume that you have a Sagemcom 5364 or 5464 router along with two 266 boosters. Please can you log into the router & go to:-
Dashboard > See Wi-Fi Settings > Manage Advanced Settings > Wi-Fi 2.4Ghz gear icon > Wi-Fi Mesh > Overview
and get me a screenshot of that display. Are these two 266s both the V2 models?
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