Lattepanda 2G OpenSuse 15.1 - WiFi to RPi Router connection fails authentication

Hi,
I encountered a problem, maybe someone can help!
I have on my Lattepanda 2G CR200 succesfully installed OpenSuse 15.1 (Linux 4.12.14 LP151.28.44) and everything runs fine , including WIFI.
Unfortunately I always fail the authentication check whenever I try to connect to a specific router, which is a Raspberry PI 3 dhcp/hostapd based wifi network. All windows devices, as well as other Linux devices (Ubuntu 18 on Jetson TX2, Fedora on Udoo Bolt) connect without any issues to the RPi router. I have tried it on the Lattepanda with Ubuntu 18 (only on bootable USB), same issue with authentication, other wifi networks are fine.
Any suggestions or ideas to resolve the matter?
(unfortunately I do require the connection for my project, also Linux distro to boost performance)

Thanks, T

#######config hostapd RPi Router#####
interface=wlan0
ssid=****************
hw_mode=g
channel=6
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=2
wpa_passphrase=************
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP
############################