You cannot connect your MyHeritage DNA Test to your Geni Profile.
Did you get your results at MyHeritage after March 1, 2019? If so, your DNA on MyHeritage can be used to get results at FTDNA. Totally free to "transfer" and to see all your matches. First download your raw data from MyHeritage, then see https://www.familytreedna.com/autosomal-transfer
DNA can then be linked from FTDNA to Geni. That is the only DNA site from which results can be linked to Geni
If you also want to use the FTDNA chromosome browser or see their ethnicity results (or ?) there is one one-time unlock fee of $19 (occasionally on sale for less).
