Change WiFi password

Question

How can I change the configured WiFi password on the ESPaper? I've flashed the espaper-client firmware which went well, but after entering the WiFi password it can't connect to the WiFi. Looking at the console output reveals that the password has been shortened and only the first 20 characters have been saved:

rl$⸮⸮|⸮$⸮| ⸮ d⸮c|⸮⸮⸮⸮r⸮bl #⸮⸮on⸮loo⸮⸮⸮ #p⸮⸮${l{lp⸮N⸮ ⸮ $ ⸮⸮ bo⸮|l⸮ ⸮b⸮⸮No⸮$⸮⸮d`⸮onl or⸮⸮⸮N b ⸮$rےo c⸮l܃⸮⸮#⸮$`⸮⸮N⸮,WIFI_SSID = [HIDDEN]
9
WIFI_PASS = [xxxxxxxxxxxxxxxxxxxx]
9
DEVICE_ID = [HIDDEN]
9
DEVICE_KEY = [HIDDEN]
10
Loaded config
State: 1

***Time before connecting to WiFi 478
................................................................................Could not connect to WiFi

***Time before going to fetching data 9398
Creating cache marker request.json_
Getting https://www.espaper.com/public/devices/161d10cc-f4f9-46ed-896c-df2f1f1d9812
Free Heap: 29216FS after cleanup: 753 of 957314 bytes used[HTTP] begin...
URL: https://www.espaper.com/public/devices/161d10cc-f4f9-46ed-896c-df2f1f1d9812 with fingerprint 88 E8 7C 53 15 F9 76 C3 36 0A 74 4C D7 E0 2C E1 1A 75 33 A3[HTTP] GET...
[HTTP] GET... code: -1
[HTTP] GET... failed, error: connection refused

***Time before going to sleep 11378

Answer 1

By getting into configuration mode: press and hold the left button, then press and release the right (reset) button, then release the left button. Now you should be back in configuration mode where you can set your WiFi credentials.

If that doesn't help: there is a line SPIFFS.format() in the main class. Uncomment it so that the file system will be formatted. Then you should get into configuration mode automatically...