Contact U. S. Stamp Checker Customer Service

Why should I report an Issue with U. S. Stamp Checker?

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 Marvin Mallon 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.

1. An up-to-date price guide and helpful list of the first one thousand United States stamps.

2. Helpful in determining the value of an individual item or your entire collection.

3. Links to stamp expertizers and dealers in your area.

4. Lots of useful information about the stamps dating from 1847 to 1951.

1. gives better ideas of key years... good job guys.Sucks at showing current values and also it does not have all the different multiple types of and or all the different colors thst go with the different denominational values of said 1 cent,5 cents, 20 cent 25cent, 50 cent ,1,2,3, 4,5,an10 dollar stamps.Wasn't very helpful with limited of stampsJust show one or 2 pictures does really help a begginerGreat,easy would like to sell collection.i collect stamps i like this app...ot helps me with info that i needNot add tight as it should be, by a LONG stretchJust a scam to sell Russian wifes and to install other apps.

2. this app would be good for a beginner novice but for more advanced collectors NO.after using I would not buy this app again even after purchase it has adds and dosent show variations of stamps not could I find any information about valueits cool and helpful for what it is.

3. different press type secrits in the desings.

4. after reading all the negative feed back I decided not load this app.

5. There are way to many varieties for just one stamp and you give no means to distinguish them .

6. there color difference.

7. You need to dig deeper.

1. Fix U. S. Stamp Checker Not Working/Crashes/Errors/Unresponsive & Black/White screen:

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

2. Fix U. S. Stamp Checker Server issues & Internet Connection

1. Check network connection: An unstable Internet will make U. S. Stamp Checker 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 U. S. Stamp Checker not working. Make sure all VPNs are off
3. Enable background data: When Background data is turned off, U. S. Stamp Checker may not be able to connect to the Internet when running in the background.