We need some more questions answered. What is the industry and service / product, what are the keywords or examples, what are the KPIs and the agreements of your service. Service area. Etc.

Its true that SEOs duties aren’t to provide conversions unless hired to do so in the scope. But its also kind of common sense that if you want to stay hired, you need to care about results. If you’re not the one doing conversion rate optimization, you need to advise the client to do so.

Also weird they don’t respect backlinks. Its a confirmed top 3 factor for ranking according to Google’s own execs.