also the new features in lightroom 8.3 don't show up even thow it is up to date.
It is unclear what you mean by LR 8.3.
As of a couple days ago, the current version of LR is 6.1 or CC 2015.1 which corresponds to the Photoshop Camera Raw plug-in version 9.1.
You haven’t said what camera back you’re using. IIQ support is mentioned for a few cameras on Adobe’s support list, so check and see if your camera is there, and what version of LR or PS/ACR you need:
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If you mean Camera Raw versions, here are the supported IQ 2 details:
IQ 250 IIQ 8.4 5.4 IQ 260 TIF 8.3 5.3 IQ 280 TIF 8.3 5.3
So for 260/280 TIF file format you will need LR5.3/CR8.3 or later, for the 250 IIQ format LR5.4/CR8.4 or later.