I have a Zwilling Forte titanium pan with a five-layer T-Ix non-stick coating (which I understand is just the name of the titanium Layers). According to description it's supposed to be super durable (even using metal utensils; that's why I bought it) and suitable for oven up to 250 °C. It's just over a year old and so far I was very happy with it.
Recently it's started to lose the non-stick qualities. I noticed some black spots as well as scratches. I have to admit I'm not very good at caring for it properly so I wondered if it's just burned-on food.
I couldn't get it off, so I was googling how to clean very burned on food. I used just soap (Amway dish drops) and hot water. The final attempt was sodium percarbonate and some boiling water. I was scraping with a plastic spatula. The water came out pretty brown and now it reveals what appears to be peeled-off spots (see picture), and quite a lot of them.
Have I done that with the sodium percarbonate or some other way? I have used a metal spoon literally a handful of times when cooking, never a knife or anything sharp. It's been used a lot in the year, cooking basically everything, including acidic foods. It's been used in the oven quite a bit too.
I noticed some minor scratching after my first use of a metal spoon, but nothing too bad and it still worked pretty well.
Can I still use this safely? Should/can I season it like a cast-iron one to make it work again?