Grid bot “Expiration Reason: Insufficient margin account balance” WTF?

Ok so this is the situation I found myself this morning.

I woke up with a message from binance telling me that my eth/usdt grid bot was stopped for “Expiration Reason: Insufficient margin account balance” so i took a good loss.

Apparently during the night the price of eth went up and the bot started to open short position at each grid making obviously a negative PNL then waiting for the price to come down for closing those shorts. I have no idea why this happened, before I went to bed my margin ratio was 0.22 and the liquidation price of the grid was at 2900$ so I thought that I was safe (apparently not).

My bots details are:

Mode
Geometric

Price Range
1,000.00 – 5,000.00 USDT

Grid Number
149

Profit Per Grid
1.04%

Initial Margin
209.21 USDT

Margin Mode
Cross

Initial Leverage
20x

Strategy Start Price:

1247.26 USDT

Maybe I need more collateral in my cross future wallet? But how? My margin ratio, the maintenance margin and the margin balance were fine. I don’t know why this happened and how to prevent this from happening again in the future.

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