Hi Margus,
that’s it! I installed 64-bit Idea version but run 32-bit version. I run idea.exe by default but it is 32-bit. For 64-bit version I have tu run idea64.exe! Thank you. Optimizer now displays correct JDK version and also other options like Tune JVM, Disable class verification have status “All is good”. I didn’t know about two Idea versions.