I agree with you about needing the phone center for help! I have been able to utilize the link below to schedule a phone call with Shopify Support. Make sure you are signed in, you schedule a time for Shopify to call you, and then just wait for the call!
Below are some resoures for you that include videos, FAQ's, and more information about our apps!
FAQ's - www.bytestand.com
How to use ByteStand-Import Video - https://youtu.be/yef2R2iPsTg
How to use FBA Shipping Video - https://youtu.be/D9nfPLafJDI
How to use Fresh Credit Video - https://youtu.be/WEac3HKOQ_g