From your contact dashboard, click Import.
Then, choose Import from Other Platforms and select ActiveCampaign from the list of providers.
On the next screen, you will be asked to give ActiveCampaign API Key, you can acquire the API key by going to Settings -> Developer -> API Access
Now Give your API key and URL and hit Next.
Now, simply map all the data(lists, tags, information) you need to import in FluentCRM and click continue.
Finally, review and Confirm!
Your all contacts with all their selected properties will be imported.