Authentication required to access API bearer token

Hi everyone,

I'm posting here because i can't find any solution to my problem, even after searching and testing for hours.

My aim is to extract data directly in Power Bi from the API connector.

Which API I am using:

I'm using the API from Exact, a web plateform for accounting data. You can find the related documents on the API here: https://support.exactonline.com/community/s/knowledge-base#All-All-DNO-Content-dev-getstrtd

What I want to achieve:

In order to use my API, i need to create a bearer token. In order to create it, I have to authenticate myself through two web page: the first one with my ID, the second one with my password. After that the url give me the bearer token that i can use in order to extract my data into Power BI.

What I manually do:

• First I enter this url in my browser:

https://start.exactonline.fr/api/oauth2/auth?client_id=[ID]&redirect_uri=[URI]&grant_type=authorization_code&response_type=token&force_login=1

• It opens this web page with a text input box for my username ("Nom d'utilisateur") and a next ("Suivant") button :

• After entering my username and pressing the next button this next page is opening:

• I then enter my password and generate this url:

https://[URI]#token_type=bearer&access_token=[Token]&expires_in=600

What is my problem:

My problem is about the authentication process, I can't find a way to enter my ID and password with Power Query and get the bearer token in the generated url to used it as variable in my Power Query. As a result I'm here asking for help.

I already found solutions for similar problems however these solutions work only with simpler authentication protocol.