thank you for your fast answer.
my relay is correctly wired, i know that because i can adress the pins via putty.
the only differnt is when i start up the raspberry the relay only shines light red.
i have to do the command “gpio export 26 out” then the red lights are shining bright red on the relay. if i read out the gpio then it shows 0.
i think i did somthing wrong with the bootup because befor the udating, the relay was clicking one time when i power up the pi.
also when i try to change the setting of i2C and aggree to reboot this setting will not stay. it is always to the off position. mayby you have an idea what i schould do.
best wishes from germany