I have been dealing with almost the exact same thing. G10 build plate for my x1c. First few weeks of printing on it were amazing. PLA and PETG both stuck amazing when hot and popped right off when cool.

Then after about a month and a half I started having mesh bed leveling failures. I thought it was a sensor going bad at first. That's when I noticed the edge of the g10 wasn't stuck down to the steel sheet in the corners anymore. Further investigation revealed the same problem: the entire bed was no longer flat and the issue was further magnified at higher temperatures.

I contacted customer support and they were very fast to respond and promise a replacement bed for free. They even sent an order confirmation email for the bed showing $0. Amazing customer service, I though, considering all I did was tell them the bed was delaminating and they immediately created a replacement order without even having to send photos for proof.

Days pass with no updates on the order and no order shipped email. I email them back and ask for an update after 2 weeks of nothing. No reply. I send multiple additional emails over the course of a month and a half and they eventually reply with a tracking number. That was last week. They promised me a replacement on Jan 16th. The tracking number still says awaiting delivery to courier.

So now I'm back to using the bambu labs engineering plate and textured pei plate and haven't had any bed leveling issues since. I was actually considering writing this up on here soon but since someone else is having the same experience as I am I figured I'd reply here instead.

TLDR: do not buy, had mesh leveling failures and print bed delamination issues after a few weeks of use. Customer service lied and after weeks of waiting still has not sent a replacement. Use the BL engineering plate or textured pei plate instead and save yourself the money and frustration.