After a sensitive cocoa farmer from Ecuador is getting engaged with a rich entrepreneur girl, he must decide between the marriage to rescue his bankrupt family plantation or his true love who lives far away in Germany.

You shouldn’t tell us the decision he needs to make, because if the logline is written well, the inner conflict should be obvious. Here’s an attempt.
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“When his plantation goes into foreclosure, a sensitive cocoa farmer becomes engaged to a rich American who will save his farm, but complications arise when he receives a letter from a former fiance who was the love of his life.”
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One more note, the two people in love should get the most screen time together. They should have scenes where the audience sees their connections and chemistry is built. In your logline, the ‘true love’ is far way in Germany. You should have her come to town. The farmer and the ‘true love’ need to be on screen more than the farmer and the rich entrepreneur.
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“When his plantation goes into foreclosure, a sensitive cocoa farmer becomes engaged to a rich American who will save his farm, but complications arise when his former fiance and love of his life arrives in town wanting him back.”

Hope that helped, good luck with this!