Thank you for writing the reason for this might be because you are trying to edit the family tree from our mobile version or the family tree online (in the web browser).
As you created your tree in the Family Tree Builder you will need to make all changes in the tree in the program as well, and not in the online site. If you would like me to convert your tree into a Web tree, that can be edited directly online, please let me know.If you would like to continue working in the Family Tree Builder, please download the program:http://www.myheritage.com/family-tree-builderAnd go to File > Restore project > Restore from online family site to restore your tree into the program.
Please, let me know if you need any more additional help.
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Translation by Google Translate:
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Kiitos kirjallisesti Syynä tähän saattaa olla, koska yrität muokata sukupuuhun meidän mobiiliversiota tai sukupuuhun verkossa (web-selaimessa).
Kuten loit puu Family Tree Builder sinun tulee tehdä kaikki muutokset puu ohjelmaan samoin, eikä online-sivusto. Jos haluaisi minun muuntaa puun osaksi Web puu, jota voi muokata suoraan verkossa, kerro minulle.
Jos haluat jatkaa työskentelyä Family Tree Builder, lataa ohjelma: