real lolz --I ditched 2 last year ... I worked for 2 major webcam broadcast outfits over 10 years.
the trick is to redirect from your advertising domain and track the traffic and study the logs.
I did best with affiliate whitelabel with my twitter bot feed but the conversions were awful -- 1,500:1 maybe worse
as far as paying members maybe 1:40 that were filtered to that white label.
so 1,500*40 yielded a new member on revshare worth $300.00 in rev-share WTF --in the old days I made a lot of loot.
Livejasmin/AWE are thieves, Cambuilder (Streamate) is honest but hard to convert. Your results may differ.
Trafficfactory.com is about 10% bots and the rest real.
SEO is another way but not easy to do.
You need a SEO promotion domain that leads to your white label if you do not have control of the parent domain. If your white label is on a sub-domain use the parent domain (the www).
The conversion problem is the already registered customer you attract most, not all, webcam whitelabels use the same master database of registered customers --so you will have to find new customers.
see:Ask Me Anything - Testing Advertising Networks
Social media traffic can work super well for cams, but from my experience (well, the experience of affiliates that I work with) Twitter has very low conversions into sales, seems that this audience mainly is looking for free stuff. The best social media source that I've seen very good results with is Snapchat, but you need to know the tricks how to avoid getting banned all the time.
You were mentioning SEO strategies, have you tried to work via building your own cam aggregator site?