Connection to Instagram

I know that in most cases an external connection to Instagram is done through Facebook. However, there are some platforms

https://app.metricool.com/ which allow you to connect to Instagrams without a Facebook account. If you were able to do this it would be so helpful to me and maybe many more of us.

I for some reason am not able to get a Facebook account and maybe there are some more of us in the same situation.