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Company Name: Sdui GmbH

About: Sdui is a start-up providing tools for mobile communication in education.

Headquarters: Koblenz, Rheinland-Pfalz, Germany.

Rating 4.5/5

Votes 53

2026-02-26

Sdui Customer Service 💢

Hard-to-find customer service info can be a red flag. Is Sdui Safe to use?

The following contact options are available: Pricing Information, Support, General Help, and Press Information/New Coverage (to guage reputation). Discover which options are the fastest to get your customer service issues resolved.

NOTE: If the links below doesn't work for you, Please go directly to the Homepage of Sdui GmbH

Verified email ✔✔

E-Mail: [email protected]

Website: 🌍 Visit Sdui Website

Privacy Policy: https://sdui.app/data-protection

Developer: Sdui

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Can I trust Sdui app?

Protect your data and wallet. We investigate the developer's website (Sdui.de), verify they're legit, and uncover hidden scams or complaints.

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1 Most reported problems 😔💔

4.5 out of 5

Blank black screen

2025-12-23

by Hevdidknsdv

I can’t open the app anymore. It’s just a blank black screen when I try. Very frustrating because my daughter goes to German school, I’m not a native speaker, and this is often the only way I know what’s going on at school. Now I’m in the dark and can’t figure out a way to fix it. I’ve tried everything.

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Why should I report an Issue with Sdui?

Pulling issues faced by users like you is a good way to draw attention of Sdui to your problem using the strength of crowds. We have over 1,000,000 users and companies will listen to us.
We have developed a system that will try to get in touch with a company once an issue is reported and with lots of issues reported, companies will definitely listen.
Importantly, customers can learn from other customers in case the issue is a common problem that has been solved before.
If you are a Sdui customer and are running into a problem, Justuseapp might not be the fastest and most effective way for you to solve the problem but at least you can warn others off using Sdui.