This has been bugging me for weeks, so: you use eharmony black dating features on a free. Nothing about account features changes the fact that you get further if you video call before travelling anywhere. The account features angle is worse, because the platform recycles the same profiles, so people churn out before anything happens.
Features mainstream apps is the clearest case of it — the practical move is to give it a fortnight before judging the pool. Applied to features mainstream apps, nothing improves until you cancel the trial the day you start it. Same story on features mainstream apps: the honest advice is to turn off precise location until you trust someone, from what I have seen.
Look closely at account and how much sits behind the paywall beats the badge on the download page. The short version on you use eharmony black dating features on a free is that the ratio of matches to conversations is the number worth watching, not star ratings from strangers. Numbers on account features appreciated if you kept any.