Questions about Logitech G G915 X Lightspeed

I love the layout of this keyboard, I've had a G915 Lightspeed for about 4 years. However, after some time I had the well-known double typing problem, of course outside the warranty period. Has this improved in the meantime? Does anyone know? Or does this only affect the Tyctile model?

Everyone: after throwing my G915 in the bin after 5 years and after about 2 years with the double typing problem, I'm currently using my G513 Carbon as a replacement. Unfortunately, I now have the same problem with this one... as this keyboard is a completely different technology and after thorough research I now suspect the Logitech G-Hub software, as the rest of my PC hardware was replaced and Windows reinstalled just a few weeks ago. G-hub is the only thing they have in common. There are similar reports on Reddit. It may well be that it's not the hardware. Some also say that repeatedly pressing the problematic keys aggressively over a period of about 30 seconds fixes the problem long term.

I bought the keyboard because the secondary characters are finally illuminated. However, if you look at the pictures, the tertiary characters are also illuminated, e.g. the @, #, | and so on. However, this is not the case with my keyboard. Is this a kind of marketing scam or do I have a "pre-model" where this wasn't the case?

When I select Suisse/Switzerland on the Logitech website, a different keyboard layout is displayed than the one shown in the first picture. Will the Suisse/Switzerland layout also be available from you?

When will silent(linear) version be available? Thank you!