Hello Georgios,

1)

I believe, for a succesful migration, you need both versions of the plugins: if you use a shipping method in v4, you need to have it as well for v6. Some add-ons may still be missing but we are closing the gap pretty fast.

Shipping methods for v4, like all add-ons for v4 are found under System -> Plugins -> 'j2store' type. Add-ons for v6 are found under System -> ¨Plugins -> 'j2commerce' type.

Now, I see that your v4 store uses core shipping methods, so there is nothing that stops you (in terms of shipping) to move to v6.

It looks like you have both stores configured with free shipping and standard shipping.

However there is an issue in the v6 version and I believe it is not coming from the migration, but rather from the main version v6.

We are about to release a new version tonight, I'll see that a fix can be included in that release for this issue.

2)

You should be able to add as many admins for the store, the email addresses just need to be coma separated, like in v4.

However, my last test gives me an error... To be fixed!