Hello , what a load of no sense she is serving you, people raise webforms all the time as I also do every time I need an info about my application.
In no way this will have a negative impact on your application and 6 months or not it is your complete right to follow the progress of your application , just go ahead and submit your webform, ask about eligibility security and criminality and also what is your visa office/processing center.
Trust me you can raise your webform , there is something fishy about those private agents as if they are affraid of something, don t worry go ahead, good luck