Hi vietnamix ,
Thanks for your post.
1) Can I use ATUM with WP All Import & WPML, are they compatibles and so, can I import theses Woocommerce multilingual products automatically ?
We decided to store ATUM data in custom tables for performance reasons. Unfortunately this makes WP ALL Import unable to import ATUM data. So, no, if you're trying to import any ATUM field, you can't.
2) In the case WP All Import is incompatible and if we want to use your import plugin, did this one support WPML Woocommerce multilingual products import ? Automatically, on a schedule?
Please, read this thread.
So if what you're trying to do is to update existing products and translations, the data will be imported successfully, but if you're trying to insert new products and translations, it won't work (at this time).
FYI, ATUM only stores its data for the original product, so updating the ATUM translations data would make no sense.
3) In the case 1 & 2 are not working, what do you suggest ?
Well, it depends on what are you trying to do as I told you in the previous point,I can't advise you if you don't explain to me in more detail what you want to do, sorry.