I have the Meross MRE 220. Very easy to install. No App needed.
First initial start:
Connect the MRE 220 with the powerbank
Connect the smartphone with the WIFI of the MRE220.
Start the
tello wifi,
open meross.net in your Smartphone-browser
Select the
Tello WIFI (the SSID you would like to "repeat") at meross.net and wait until the MRE220 finished the configuration
Connect Smartphone to the
tello wifi-SSID
Done
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Procedure when you would like to fly
Start the
tello
Connect the MRE 220 with the powerbank and wait till the LED Shows connection
Connect the Smartphone to the wifi-
Tello SSID (if not done auomatically)
Start the
tello app and have fun.
***********
Video Quality is improved (less frame dropping) and also the range is extended. But i do not have made any range experiments yet.
I am very happy with this solution.

The Xiaomi repeater was no choice because one app is needed and the app send my personal data from the smartphone home to China. (no protection of data privacy

)
Regards
sfs-archery