Is there anyone who can help me understand why I can be H with no subclads?
Because mt. H is close to H2a2 which is the rCRS, i.e. the Meridian of Greenwick of the mitochondrion, and
1) then it gets a few mutations, less than all the other haplogroups. Besides hg. H is the most diffused in Europe,
2) then it gets many different lines, more than all the other haplogroups.
3) Then it is difficult to undestand the subclade only from HVRI and II, certainly those tested by you.
4) Then it is necessary to test the Coding Region for understanding the subclade.