Extension doesn't show up on Contao-Manager discovery

Good day!
I read in past reported issues that this extension supposedly was supporting Contao 4.
Sadly, I cannot seem to find it on the Contao-Manager.
Contao Version 4.4.44
Contao-Manager Version 1.2.1

[christophbach]

You have to add it to the required section of your composer.json file.

"dma/dma_elementgenerator": "dev-develop"

Then go back to the manager and you should be able to install it.

[GOVILI]

Gibt es hier schon was Neues?