@rippkedesign
1. For shipping- do you mean the vendors are unable to set their own shipping rates in their pro dashboard > settings > shipping? DO you have Vendor Shipping enabled and configured? (wp admin > woocommerce > settings > shipping > vendor shipping)
2. Are you using the my-account page to have them login, or are you using the fancy forms made by buddyboss? If the latter, if you have then login by going directly to the my-account page, can they login without issues?