Weak channel not working with MS Bot Framework

I created many bots with MS Bot Framework and they worked correctly by following the instructions of the respective channel (in -> https://dev.botframework.com/

Add another channel -> Add).

All of them, including Slack, to work properly, but now create an application in Slack ( https://api.slack.com/applications/new

) is different from the instruction, and the bot does not work anymore (neither old nor new).

After submitting the credentials https://dev.botframework.com/

to add a Slack channel, everything looks fine, but in Slack the bot is always disabled and the messages don't get botframework nor the messaging endpoint after that.

The only message I get on the messaging endpoint is:

{ type: 'installationUpdate',
        action: 'add',
        sourceEvent: 
         { SlackMessage: 
            { type: 'bot_added',

      

        
        
        
      

    

After adding the bot, but nothing after that. Any hints?