Which ports does my host need to open your IP's up to?
To establish the connection with our clients’ stores, we usually make use of the following ports - 80 and 443. To be more specific, for HTTP protocol we use port 80, and for HTTPS - port 443. Make sure that you have the ports open for the Cart2Cart.
From old cart
To new cart
Migrate Your Store Data to a New Platform in 3 Steps