Published by SumUp on Mar 14, 2024

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Why should I report an Issue with SumUp?

  1. AppContacter will directly Email your issue/feedback to an apps's customer service once you report an issue and with lots of issues reported, companies will definitely listen to you.
  2. Pulling issues faced by users like you is a good way to draw attention of SumUp to your problem using the strength of crowds.
  3. Importantly, customers can learn from other customers in case the issue is a common problem that has been solved before.
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About SumUp

1. Our app also makes it easy to manage your item catalog, build an online store, sell gift cards, issue invoices, send payment links, and more.

2. Open the SumUp App and you’ll find a gift card page for your business, ready to share.

3. The SumUp App makes it simple to accept payments and manage your business.

4. Download our app and pair your device with a SumUp Card Reader to take chip and contactless payments.

5. Use our free app together with a SumUp mobile card reader to get paid anywhere.

6. There are also no costs for receiving payment by bank transfer – just a small fixed fee for card payments.

7. With SumUp, you can accept credit cards and debit cards, plus Apple Pay and Google Pay.

8. Simply enter the amount you want to charge, create a link, and share it with your customer via social media, SMS, or email.

9. It’s a great way to take cashless payments without a credit card reader.

10. Your customers can buy digital gift cards for any amount, and personalize them by picking from a range of designs.

11. With SumUp Invoices, you can generate professional, legally compliant, on-brand invoices in minutes.

SumUp Customer Insights

1. Also, the app has started muddling up my sale item descriptions to random letters and numbers! Not on every sale, but on most, so again, totally random!I've had the sumup air (3g) card reader since april/may 2021.

2. I use my Samsung S8 to connect the reader with the app but now soon as I open the app it hangs and my phone is completely frozen for unidentified period of time like it's been hijacked and I have to wait till it comes back to life.

3. What's the point of a payment app that is always down so it can't take payments?!@?🤬 Going back to Square...I never had so many issues!!I have tried several companies card readers and POS systems.

4. Really annoyed and extremely frustrated as I'm unable to take card payments.Previous Review⭐~~ UPDATE: Since 1st review my account has finally been setup.

5. Also the gift card tab never works, I always get that there is a connection error.On my tablet, my checkout and sales switches to landscape and won't correct to portrait.

6. The SumUp Pro reader is the most robust and reliable I have tried and the POS app has been stable and reliable.

7. On my next sales I see " Couldn't connect to the card reader.

8. I've had customers in line, Sum-up plus reader is saying INACTIVE !! I'm trying to keep customers calm all the while blaming Wi-Fi.

9. 2) There is no option to make fractional charges for items that are sold by the pound, for example.Perfect for my needs ... Somethings to consider going forward to make even better, is allowing a 10second video on products.

10. It does not work on a 3g phone signal as sumup info states.

11. I'm looking out for alternatives and will change ASAP.I had Square card for years, change to Sum-up 3 years ago.

Steps to Troubleshoot & Fix SumUp Issues

1. Fix SumUp Not Working/Crashes/Errors/Unresponsive & Black/White screen:


  1. Restart SumUp: Restarting the app will resolve most errors.
  2. Update the SumUp App. Here is how:
    1. On Android goto PlayStore » Search for "SumUp" » Open SumUp » click "Update".
    2. On iPhone, goto AppStore » Your profile » Available Updates » Check for SumUp » click "UPDATE".
  3. Clear SumUp app cache: Clearing cached data will force your app to retrieve the latest data directly from SumUp servers.
    1. On Android, goto Settings » Apps » Select "SumUp" » click Storage » click "Clear Cache".
  4. Check SumUp app permissions. If any of these permissions required to use your device's features are disenabled, SumUp might not work.
  5. Uninstall and reinstall SumUp. If nothing else has worked, completely uninstall SumUp then reinstall.
  6. Restart your device. Last, restarting your device can often clear most problems causing SumUp not working


2. Fix SumUp Server issues & Internet Connection


  1. Check network connection: An unstable Internet will make SumUp be unable to connect to it's servers. Ensure your wi-fi is working then restart app.
  2. Disable VPN: VPN can cause connection errors and lead to SumUp not working. Make sure all VPNs are off
  3. Enable background data: When Background data is turned off, SumUp may not be able to connect to the Internet when running in the background.

Reported Issues