Ideco: Monex and a JIS & T Rex

I transferred my DC account from Sompo to Ideco using Monex, it took ages.

From Monex I'm taken to a website called JIS&T that has a user interface that reminds me of the BBS era.

There's a lot of images that I can't translate easily. I can't find the place to set my monthly contributions, and what products will be purchased, can someone help me?

4th item on the menu says: 商品別配分変更 (Product allocation changes), if I click there I get a screen showing:
お客様の加入者口座番号では、このサービスをご利用いただけません (Fuck off).

Can I keep contributing even if I become unemployed? And would it still make sense to do that if my income falls below the income tax threshold? In that case, can I stop using it or set my contributions to 0 until I'm sure I can generate an income above the tax threshold again?

by tomodachi_reloaded