I reached out to a vendor through WW that I love her work so much more than the others in her category. Lots of great reviews all (40 reviews) 100% 5 star on both WW and The Knot. Have been speaking with her through the messaging on WW and she's exactly what I'm looking for besides her being very slow to respond (3-4 days in between communications). But, everytime I ask to speak her on the phone she blows me off and says I can ask her any questions through the messaging app. She does have a website and her contact portion links to WW profile and has no other email listed. She even sent me the contract to sign through WW. Before I sign this contract is her lack of communication methods something I should be concerned about?