Layers not sticking

printing a relatively simple right angled bracket for a computer fan and heatsink…the top few layers of the inner vertical side as shown attached in red arent “sticking” and can be pressed in and out
I am printing it in the orientation shown in the screenshot - i.e. the face that isnt sticking is the inner part of the bracket, the outer (also vertical) side seems OK
I am using Creative PETG with the same settings I have always used for everything


fan guard v12.3mf (88.3 KB)

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What is your Nozzle Temperature that you are using?