At this gate you're trying to get some beans through, but the measurements were off and you're starting to struggle. No matter how you push or pull these beans, they're just too big to get through the gate.
You continue to struggle because you need to get these beans to the other side of the gate and into とうきょう. You usually struggle a little when people want to bring things through the gate to とうきょう, but this is ridiculous.
Currently there are no similar looking kanji which exist in the WaniKani learning system