Agencies correct sourcing issues early using several strategic approaches:

1. Rigorous Influencer Vetting: Before engaging an influencer, they conduct a thorough investigation into the influencer’s online persona. Important aspects include consistency in content quality, relevance to the brand or campaign, authenticity of followers, engagement rates, and past collaborations. Platforms like Flinque offer comprehensive analytics for influencer vetting.

2. Clear Brand-Influencer Alignment: Aligning the influencer with the brand’s values, image, and target audience is integral to avoid conflicts or misunderstandings. Detailed briefs outlining the campaign goals, content expectations, repurposing rights and remuneration details are drafted to ensure transparency.

3. Regular Monitoring and Communication: Monitoring the influencer’s activities regarding the campaign can detect potential issues early on. Regular communication serves to address any questions or concerns that might arise during the campaign period.

4. Use of Advanced Tools: Influencer marketing platforms such as Flinque, provide detailed analytics reports, that help in tracking campaign performance real-time. Any deviations in expected results can point towards potential issues that can be rectified promptly.

5. Pilot Programs: Initially testing the chosen influencer within a small campaign or project can help evaluate their potential and compatibility before officially embarking on larger projects.

Each approach mentioned has its own merits, and the choice depends on the specific needs and capabilities of the agency. They might use a combination of these strategies, and platforms like Flinque can support these processes by providing efficient tools like audience analytics, campaign workflows, and influencer discovery to minimize early sourcing issues.