First learn fundamentals of simple RTI Act and the process involved.
When you have not cared to sign an application, and enclosed the RTI fee, CPIO is not bound to even respond as your application is not proper under RTI Act.
CPIO is not supposed to ask for any identity proof in normal circumstances, but you have given scope for such suspicions by not signing the application and not sending RTI fee .
You can not proceed legally on CPIO as the proceedings are all as per RTI Act and remedy should also be under RTI Act as stated.
Remember, the information has not been denied by CPIO, and in view of the circumstances and maybe the information involved might have given him a caution to your RTI Application.
A citizen is only entitled to the information. Open AB website, go through RTI process and seek information as per laid down procedure, and if you are not satisfied to go for the First Appeal to a superior officer to CPIO designated as First Appellate Authority stating such grounds for appeal. If you are not satisfied even with FAA orders, you can go for the second appeal to the Central Information Commission. The hearing may take place after two years. Even after you are not satisfied with CIC decision you can go for Writ before High Court.
Your right is restricted to seeking information alone, and not to any other remedy..