Android Question Problem in Publishing App on Googleplay

[manzoor]

Today I tried to upload my App on googleplaystore but got this error, I earlier developed this app in other online program (Thunkable)
Kindly help me to solve this issue

 

[Erel]

1. targetSdkVersion is wrong. https://www.b4x.com/search?query=targetSdkVersion

2. You need to use the same signing key that you previously used.

 

[manzoor]

I searched it but unable to know that how to change SDK, kindly help

 

[Brian Dean]

I searched it but unable to know that how to change SDK, kindly help

Open the Manifest Editor from the Project menu - the target SDK level (which must be 28 at present) is set in line 5 ...

<uses-sdk android:minSdkVersion="5" android:targetSdkVersion="28"/>

 

[manzoor]

Open the Manifest Editor from the Project menu - the target SDK level (which must be 28 at present) is set in line 5 ...

Wonderful... Thanks a Lot Brain,
SDK issue solved but Certificate issue yet here..........

Also guide about this.......

 

[Erel]

You need to find out how you previous app was signed. Another option is to change the package name and treat it as a new app.