It looks like jumpjack tried to contact you.
I'm sure there's many people who are happy to help with a specific problem, maybe those that can do the work are already occupied.
If I read correctly you need to
run for 4 seconds
return to start
run for 8 seconds
return to start
run for 12 seconds
return to start
run for 16 seconds
return to start
Is that it?
Rob