Unconfirmed TX from bibox

[chrouzz]

I found 2 similars issues.
I link them here for the reader.

Lost my GRIN while sending to Gate.io

hey man, Just found your topic and you seem to have similar issue that I have. check my post please

Hotbit withdrawal Grin to Kucoin - Complete but there are no means

Hey man just read your problem, I have something similar from bibox. please check my post. They also used null for transaction fee. Did you solve your issue by the way. https://forum.grin.mw/t/unconfirmed-tx-from-bibox/4860 check my post. Similar issue with different exchanges.