Do you know if there's a way to fix it if we've just been doing 1 card for 2 back to back walks?

I was under the impression that as a sitter I am supposed to do just 1 rover card for the day. I was doing 2 walks back to back at 30 mins each, totaling 1 hour, but I've just been tracking it as 1 rover card. Will I still get paid for 2 walks? If not, how to I fix this? I have done 4 out of 5 walks for this owner so far and would like to receive full payment for my services.