Has anyone tried or got an idea about panels from BeyondTiles? https://www.beyondtiles.co.nz/products 

According to the FAQ, the materials are "are constructed using exterior grade WBP marine plywood and, providing all exposed plywood edges are fully sealed with a recommended polymer sealant."

I am having a major problem on my shower bath wall that was butchered by a shower company. They refunded me the money but left me with a disaster to sort out after they took the liner off. I've seen a couple of acrylic liner installers and it looks like they're not interested after seeing/measuring the walls. They haven't got back to me. It looks like I'm on my own. So, I'm looking for an alternative that I can do by myself. I'm not sure if the 2mm acrylic liner wouldn't bulked due to the condition of the wall where the joint is. The wall isn't plumb now. Suggestions are highly appreciated.