ESP8266 Thingspeak data doesn't show up

I built this project: http://ift.tt/1Fvt2ux The ESP8266 outputs something and I think it should be ok. But there are no entries in the Thingspeak channel. I already double-checked the API-Write Key. Here's the serial output:

Setting up WIFI...
> IP unavaiable, Waiting...
IP unavaiable, Waiting...
IP unavaiable, Waiting...
IP unavaiable, Waiting...
IP unavaiable, Waiting...
IP unavaiable, Waiting...
Config done, IP is 192.168.1.9
Last temp: 216875
Temp:21.6875.6875 C

Sending data to thingspeak.com
Last temp: 216875
Temp:21.6875.6875 C

Sending data to thingspeak.com
Got disconnection...
Last temp: 216875
Temp:21.6875.6875 C

Sending data to thingspeak.com
Got disconnection...
Last temp: 216875
Temp:21.6875.6875 C

Sending data to thingspeak.com
Got disconnection...
Last temp: 216875
Temp:21.6875.6875 C

How can I solve this problem? Thanks and please excuse my bad english!