There's an algorithm that the engine follows when they know you have more than one account. If your opponent makes a blunder, the engine substitutes a better move. Now you know...
We all hit bad patches now and then. Some folks play through them, some take a break, and others change up their training schedule. You have to figure out what works for you. Also stress just kills your chess ability so maybe something is going on in your life. Good luck.
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