There are two possible reasons:
1. You have only just found the lab caches, and those finds have not fully imported into PGC yet (although they appear in other places within your profile on PGC) . Give it another couple of days.
2. You are not a paid member of PGC, as many lab cache stats are only for paid members. I can see it in your stats but I am not sure if that is because I am a paid member. Check the Finds tab on Statistics > Profile Stats. If it does not show "Rolli2 has 630 finds on 630 unique geocaches, including 9 lab caches" then that is the reason. Paid membership costs 24 Euro/year and comes with a host of benefits.