Please help! ⇐ Dishwasher chemicals

[Anna]

Good afternoon I bought an Electrolux dishwasher and encountered the following problem - after washing, when the door opens, all the dishes and foam are on the bottom of the machine. I won’t say that it’s just like snowdrifts, but you take a glass, and foam flows down it in places and you can hear it hissing. It seems to me that the problem is in the rinse aid (somat) because I tested the detergent just in a glass, it does not foam at all, but the rinse aid foams a lot. I tried setting the rinse aid level to min and there was still foam left, even after 3 washes without detergent. Please tell me, has anyone encountered such a problem and what to do in such a situation?