Blog with "only" blogs wordpress.com and tumblr.com

I write here because I've been looking for this forum and
tried everything but I could not solve my problem. My problem is that I can not publish "only" on my blogs wordpress.com and tumblr.com. I've tried this

and also

and also

Same on tumblr.com. I can not understand why I can not do that? What am I doing wrong?

Error is "no form" or "no match engine". I will be really grateful if you can help me about it.

I do not want to use serengines and I want this done by core gsa-ser

I have Rankerx and it is very easy to use these blogs with this. But I want to use the creator of ser items because I am able to create original content with above average English with that.