Scale doing things that don't scale?

Hey IndieHackers,

I'm Mohammed Imtiyaz, co-founder of Curatora.io.

Curatora.io is a content curation tool that helps you discover niche-relevant engaging content to share on social media.

I'm doing things that don't scale to bring the first 100 customers. Mainly my audiences are Social Media Agencies and Individual Managers.

So far I'm able to acquire 21 users in 15 days. I feel it is a very low number of users in the span of 15 days.

Should I continue to do the same? How much we can scale using this method?