Merging GPU and L3+ - GPU problems using ccminer

Hi

I have a 980ti and an L3++ Asic I wish to merge this hashing power on prohashing. Asic works fine but the GPU .bat file im having a problem with.

I can get CCminer to work with another pool just not this one. Here is my config:

ccminer -a scrypt -o stratum+tcp://prohashing.com:3333 -u * -p

It briefly opens but then closes as if it cannot connect to the stratum. I got that link from previous posts in this forum, is that still valid?

my username is also there I just * it out here.

Thanks