Spray sealing-do not recognize the meaning or application errors?

Hello, since the manufacturer of my vehicle is ridden by a machine wash (because of the factory attached sticker) and strongly recommends hand wash, I had to deal with the topic of hand wash in more detail recently. I also came across the topic of spray sealing. I thought I would try this out and got a wet seal during the rinse on the SB box. Always nice in individual zones only water then spray sealing, dan Rinse n, as recommended in the instructions for spray sealing. Dried then with microfibre drying cloths. Result: When it has rained, the water beads on the paint look great, but as soon as the car is dry, the absolute disaster. The dried away beads leave a pattern of ugly, small round dirt stains, the car looks like a ladybug. Before the spray sealing the rain water has simply expired and has the dirt Is this an additional side effect of a spray sealing (then the topic of spray sealing would have been done for me) or do I possibly do something wrong? VG Günter