How to Update apk file to .aab in google play ?

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Hi.. I just try update my app with .aab file but any notice, i need to sign before upload .abb.

My question, will my .abb can update in the future? because previous we upload apk file without sign and we choose Opt Out,

Please Help @RomanJuly @meold

Thank You

WideArt

Tengo el mismo problema no se como actualizar mis aplicaciones.

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Please reply this @meold @RomanJuly and give solution or tutorial

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Please reply this @meold @RomanJuly and give solution or tutorial

RomanJuly

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Send a request to support@andromo.com with all details.

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@RomanJuly email send from yesterday, please reply.

Thank you