High prices at DHL Express shipping rates WooCommerce checkout

Hello I have a problem with my WooCommerce page.

I installed the appropriate plugins and followed the appropriate instructions:

https://support.dhlexpresscommerce.com/hc/en-gb/articles/360036286211-Set-up-WooCommerce-Integration

https://support.dhlexpresscommerce.com/hc/en-gb/articles/360035934192

But for some reason, when I tested it live, it writes an unrealistically high price for shipping (about: €9,469 for an 1kg heavy package).

I already tried to change my item weight kg to g, but it didn’t helped. Does anyone have any idea what could be causing this?