.HTACCESS and ROBOTS advice needed!

Hello to all.
To the point.
I need advice .

I have a root domain which is a wordpress blog.

And have many subdomains DOT rootdomain also wordpress.

I have affiliate banners, links and adsense.

Recently my adsense page views and clicks dropped and regular traffic.

My htaccess and robots text are the same on root domain and all subdomains.

Is that the correct way of using them ?
I tried posting my htaccess and robots text but not allowed....

ANYONE KNOWS HOW CAN I POST MY HTACCESS FILE HERE SO I CAN GET HELP?

This is impossible to answer definitively without more information.

In general, if the files use root references (/) you should be ok, if any use the domain name as a base they need to be changed for each subdomain.