Attorney only accepts cash or check

[April Birdsong]

Newbie here. Just bought 1st SFH for LTR that is currently being renovated. I am going to get an LLC for business. Still deciding if I need to place property in it.
I reached out to local attorney for LLC, rental law etc and they only take cash or check as a retainer and payment. 
For some reason, that just doesn’t make sense to me. Am I just missing something?

Thanks so much 

April