App cant be installed in Tizen 7

Hello.
We have a webapp that works fine on tizen 4 and tizen 6 using Instalation from url.
When we try to install the same app in Tizen 7, the TV show us an error:

“Install custom App
No se pudo realizar la instlación. Vuelva a intentar más tarde. If this problem persists, reinstall the application from the instalar aplication web menu or instalación a partir de un dispositivo USB menu and try again”

and then

“unable to start the app. Please try again”

The TV is a LH55QMCEBGCXZB

We try installing a previous versión of our app that works on others tvs too, but in tizen 7 there was no luck.

What other info could we bring to you? what things we have to look to maintain that compatibility?
Thank you

Hello,

Please login to Seller Office TV (https://seller.samsungapps.com/tv) and Ask Question in the 1:1 Q&A section

Thank you,
Hasan