[Android Apps and Games] 3c:
Please find attached requested log.txt file instead recommended method (I removed the date as it was not easy pulling the file out of the device with many ':' in its name.

I suspect you won't be able to reproduce unless you have a short enough username. Also I doubt it will showing anything in the logs as there is no crash, and the app is likely checking username length before actually trying to log me in.

EDIT: By the way I tapped a dozen times on 'Envoyer' which had no effect whatsoever, app never tried to log me in.

EDIT2: As I use Android Studio, I was able to get debugging logs only for the XDA app. When I tap 'Envoyer' (probably the 'Send' button), it only logs those 2 lines:

11-07 16:07:19.268 12969-12969/com.xda.labs D/ViewRootImpl@c4faa8[MainActivity]: ViewPostImeInputStage processPointer 0
11-07 16:07:19.336 12969-12969/com.xda.labs D/ViewRootImpl@c4faa8[MainActivity]: ViewPostImeInputStage processPointer 1

If I enter a 3 letter username, I get this:

11-07 16:08:43.883 12969-12969/com.xda.labs D/ViewRootImpl@c4faa8[MainActivity]: ViewPostImeInputStage processPointer 0
11-07 16:08:44.014 12969-12969/com.xda.labs D/ViewRootImpl@c4faa8[MainActivity]: ViewPostImeInputStage processPointer 1
11-07 16:08:44.369 12969-12969/com.xda.labs D/InputMethodManager: HSI from window - flag : 0 Pid : 12969
11-07 16:08:44.376 12969-18260/com.xda.labs I/System.out: Thread-33568(ApacheHTTPLog):isSBSettingEnabled false
11-07 16:08:44.376 12969-18260/com.xda.labs I/System.out: Thread-33568(ApacheHTTPLog):isShipBuild true
11-07 16:08:44.376 12969-18260/com.xda.labs I/System.out: Thread-33568(ApacheHTTPLog):getDebugLevel 0x4f4c
11-07 16:08:44.376 12969-18260/com.xda.labs I/System.out: Thread-33568(ApacheHTTPLog):Smart Bonding Setting is false
11-07 16:08:44.376 12969-18260/com.xda.labs I/System.out: Thread-33568(ApacheHTTPLog):SmartBonding Setting is false, SHIP_BUILD is true, log to file is false, DBG is false, DEBUG_LEVEL (1-LOW, 2-MID, 3-HIGH) is 1
11-07 16:08:46.161 12969-18260/com.xda.labs I/System.out: Authorization server expects Basic authentication
11-07 16:08:46.161 12969-18260/com.xda.labs I/System.out: Retry with login credentials
11-07 16:08:46.162 12969-18260/com.xda.labs I/System.out: Thread-72 calls detatch()
11-07 16:08:46.162 12969-18260/com.xda.labs I/System.out: Thread-33568(ApacheHTTPLog):isSBSettingEnabled false
11-07 16:08:46.163 12969-18260/com.xda.labs I/System.out: Thread-33568(ApacheHTTPLog):isShipBuild true
11-07 16:08:46.163 12969-18260/com.xda.labs I/System.out: Thread-33568(ApacheHTTPLog):getDebugLevel 0x4f4c
11-07 16:08:46.163 12969-18260/com.xda.labs I/System.out: Thread-33568(ApacheHTTPLog):Smart Bonding Setting is false
11-07 16:08:46.163 12969-18260/com.xda.labs I/System.out: Thread-33568(ApacheHTTPLog):SmartBonding Setting is false, SHIP_BUILD is true, log to file is false, DBG is false, DEBUG_LEVEL (1-LOW, 2-MID, 3-HIGH) is 1
11-07 16:08:46.877 12969-18260/com.xda.labs I/System.out: Retry with client credentials
11-07 16:08:46.877 12969-18260/com.xda.labs I/System.out: Thread-72 calls detatch()
11-07 16:08:46.878 12969-18260/com.xda.labs I/System.out: Thread-33568(ApacheHTTPLog):isSBSettingEnabled false
11-07 16:08:46.879 12969-18260/com.xda.labs I/System.out: Thread-33568(ApacheHTTPLog):isShipBuild true
11-07 16:08:46.880 12969-18260/com.xda.labs I/System.out: Thread-33568(ApacheHTTPLog):getDebugLevel 0x4f4c
11-07 16:08:46.880 12969-18260/com.xda.labs I/System.out: Thread-33568(ApacheHTTPLog):Smart Bonding Setting is false
11-07 16:08:46.880 12969-18260/com.xda.labs I/System.out: Thread-33568(ApacheHTTPLog):SmartBonding Setting is false, SHIP_BUILD is true, log to file is false, DBG is false, DEBUG_LEVEL (1-LOW, 2-MID, 3-HIGH) is 1
11-07 16:08:47.493 12969-18260/com.xda.labs I/System.out: code [400]
11-07 16:08:47.494 12969-18260/com.xda.labs I/System.out: Thread-72 calls detatch()
11-07 16:08:47.498 12969-18260/com.xda.labs D/OAuthHandler: RuntimeException getAccessToken:
11-07 16:08:47.498 12969-18260/com.xda.labs D/OAuthHandler: org.sdf.danielsz.OAuthException: Could not retrieve access token for user: 3cc
11-07 16:08:47.498 12969-18260/com.xda.labs D/OAuthHandler: at org.sdf.danielsz.OAuthUtils.getAccessToken(OAuthUtils.java:165)
11-07 16:08:47.498 12969-18260/com.xda.labs D/OAuthHandler: at org.sdf.danielsz.OAuthUtils.getAccessToken(OAuthUtils.java:192)
11-07 16:08:47.498 12969-18260/com.xda.labs D/OAuthHandler: at org.sdf.danielsz.OAuth2Client.getAccessToken(OAuth2Client.java:65)
11-07 16:08:47.498 12969-18260/com.xda.labs D/OAuthHandler: at org.sdf.danielsz.OAuth2Client.getAccessToken(OAuth2Client.java:69)
11-07 16:08:47.498 12969-18260/com.xda.labs D/OAuthHandler: at com.xda.labs.OAuth2Helper.createToken(OAuth2Helper.java:64)
11-07 16:08:47.499 12969-18260/com.xda.labs D/OAuthHandler: at com.xda.labs.OAuth2Helper.createToken(OAuth2Helper.java:70)
11-07 16:08:47.499 12969-18260/com.xda.labs D/OAuthHandler: at com.xda.labs.OAuth2Helper.createToken(OAuth2Helper.java:74)
11-07 16:08:47.499 12969-18260/com.xda.labs D/OAuthHandler: at com.xda.labs.OAuthHandler.grabAccessToken(OAuthHandler.java:211)
11-07 16:08:47.499 12969-18260/com.xda.labs D/OAuthHandler: at com.xda.labs.OAuthHandler.access$000(OAuthHandler.java:39)
11-07 16:08:47.499 12969-18260/com.xda.labs D/OAuthHandler: at com.xda.labs.OAuthHandler$2.run(OAuthHandler.java:110)
11-07 16:08:47.499 12969-18260/com.xda.labs D/OAuthHandler: at java.lang.Thread.run(Thread.java:762)