Ioun stone bonus not applying
 

I have an Ioun stone deep red sphere socketed into my wayfinder and the wayfinder is equipped. But the dex bonus does not reflect in my stats. I had to make a custom entry in my Personal tab to reflect the stats and the bonus feat.

Am I doing something wrong or is this how it is supposed to reflect?

Also if I purchase and equip the snakeskin tunic it also does not reflect in my stats the increase.

Does the character perhaps have something else that provides an enhancement bonus to DEX?

Yes, I have a dex belt on as well.

Can I not run multiple items with enhancements?

No, bonuses of the same type don't stack in Pathfinder (other than Dodge bonuses).

One of the great things about using Hero Lab for Pathfinder is that it takes care of remembering what does and doesn't stack for you.