I'm unable to merge two profiles that were suggested for me to merge

Dear all,

Dezső Battlay dr. and Dezső Battlay dr. are the same people and I received an email notification about Tree Matches. I see the comparison page here: https://www.geni.com/merge/compare/6000000185707293870?cmp=featured...
But when I click on "Yes, merge them" then I get an error message ("You don't have permission to view this page"). I have 2 requests:
1. could someone merge these profiles, please?
2. what should I do next time in a similar case?

Thank very much in advance!