Well that’s a headline I never thought I’ll write. Several posts and comments on the GOG subreddit have noticed a promotional e-mail that contains some… interesting symbols, which I can confirm with my own e-mail. As can be seen from the screenshot below, an e-mail containing a discount code for the game The End of the Sun (nothing out of the ordinary so far) contains 4 symbols that resemble Nazi iconography.



This explanation falls apart when it comes to the SS symbol.
Gog claims that they were using the sowilo rune, but as you found they were using the lower case koppa letter. The sowilo rune is included in unicode, there was no reason to use the greek letter koppa for it … unless they wanted to hint at something else. And the elephant in the room: why did they put 2 of the things next to eachother? Gog hasn’t found a suitable excuse for that so far.
It’s an obvious dog whistle and it’s rightfully being called out.