I found that changing a detail in pca's 'My Profile' and then clicking on 'Update Me' did the trick.
I had managed for years of being logged out every few minutes despite having the "Keep me signed in" ticked. See my thread click here from 16th Feb
OnePlus 5 review
Alice Saey's mesmerising animation for Dutch singer Mark Lotterman
iPad Pro 10.5in (2017) review
Comment booster votre iPhone ?