Yes, many have encountered this. To be honest, most agencies do not give any guarantees for conversion improvement and just take a fixed fee every month. But there are those who are genuinely interested in your success. For example, I found a company that analyzes data before starting work and gives accurate forecasts for improvement. They guarantee growth by a certain percentage within a fixed time. If the result is not achieved, they do additional experiments for free. This can be really useful if you want to see results. I can recommend looking at
https://conversionrate.store/saas-co...tion-services/
