I have already reviewed the docs you sent. My postman collections where working fine and I could get orders and create and update products using postman API calls with both oauth1.0 and oauth2.0 authorization.
Siteground disabled our domain due to an account issue. When they reenabled the domain then the api calls stopped working. I really feel it has to do with some type of issue with the admin account. not sure what else to check.
can you offer any other suggestions?
I am still unable to create products and receive the 401 error using Postman as well. Any other insight you can provide?
