Translation not showing

Hello ,

First of all , thank you for the plugin ..

it has good options and , which i hope to increase by time ..

Regarding my issue with the translation , it is actually related to the sentence ” Estimated Delivery ” , which i already translated through ” Loco Translate Plugin ” , but unfortunately it didn’t change anything in orders / front end / emails , it shows the same sentence .. i translated other sentences before and it is working fine ..

So how can i fix this ?!