Explosive precursors:

Under the requirements relating to explosive precursors in E.U. countries (which have not yet excluded the U.K. due to Brexit), Regulation (E.U.) 2019/1148 will take effect on February 1, 2021. As a result, Buystocklot.com will not permit the distribution of explosive precursors in the U.K., U.E. According to the law implemented in these countries' public.

You can comprehend if you click on this link:

This law will be imposed on November 1, 2021. Afterward, users have to comply with the law and regulations.

You should communicate with clients and refund the cash if the order didn't forward.
If the order is dispatched, then you can continue it according to the previous procedure.
This procedure is not suitable for other countries.
You can negotiate with the custom manager for more details.