The Purple Lemonade was born today! I am out of town for 4 days so she stays in her little EazyPot for quite some time. But she'll be fine a can explode after that in her 3gal (11L) pot.
Update 22/10/24:
During the four days I was out of home, the EazyPot completely dried out. And unfortunately, the Purple Lemonade stretched a lot (maybe because of not enough substrate in the pod and that the humidity dome blocked light?) and was pinned down to the bottom because it reached the dome und pressed itself down. But with planting it inside its 3gal pot, I was able to fix the issue by planting it deep enough. Now the seedling looks almost normal and healthy :)