M1 base Mac + Thunderbolt 3 dock is only capable to support one external monitor. Please refer to HERE to check the compatibility with M1 base Mac.
Regarding the availability of Thunderbolt 4 Element Hub, there is no certain schedule of it in Asia at present. We will update in Asia online store once the stock arrived. Thank you for your inquiries and interests in our new product.
Currently the shipping methods to some areas are limited due to COVID-19. In case you can't find your country in the shipping list, please contact : firstname.lastname@example.org for more support. Thank you for your continuous support in this difficult time.