ok thanks for your help, it looks like the script is being called. I didn't realize the intverval gets multiplied by the retry count. (I expected an instant retry after first Wget timeout) Anyway is there any log entry, when the restart of the mobile connection is triggered ?
e2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
Tue May 28 14:44:55 2019 user.info rms_connect[4877]: Failed to resolve hostname!
Tue May 28 14:45:00 2019 cron.info crond[17021]: USER root pid 19108 cmd /usr/sbin/check_wget_reboot.sh
Tue May 28 14:45:00 2019 daemon.notice netifd: ppp (17834): [05-28_14:45:00:522] requestRegistrationStat
e2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
Tue May 28 14:45:01 2019 user.notice wget_reboot.sh: Restarting mobile data connection after 5 unsuccess
ful retries
Tue May 28 14:45:01 2019 daemon.notice netifd: ppp (19138): teardown: ppp
Tue May 28 14:45:01 2019 daemon.notice netifd: ppp (19138): Command failed: Permission denied
Tue May 28 14:45:01 2019 daemon.notice netifd: ppp (17834): [05-28_14:45:01:707] QmiWwanThread exit
Tue May 28 14:45:01 2019 daemon.notice netifd: ppp (17834): [05-28_14:45:01:708] main exit
Tue May 28 14:45:01 2019 daemon.notice netifd: Interface 'ppp' is now down
Tue May 28 14:45:01 2019 local1.info hotplug-gsmstate[19153]: envACT: ifup-failed
Tue May 28 14:45:01 2019 local1.info hotplug-gsmstate[19153]: envINT: ppp
Tue May 28 14:45:02 2019 daemon.notice netifd: Interface 'ppp' is setting up now
Tue May 28 14:45:02 2019 daemon.notice netifd: ppp (19206): setup: ppp
Tue May 28 14:45:02 2019 local1.info gsmd[2491]: gsmd send: 'AT+QCFG="roamservice",255,1' (28)
Tue May 28 14:45:02 2019 local1.info gsmd[2491]: gsmd get: 'OK' (2)
Tue May 28 14:45:02 2019 daemon.notice netifd: ppp (19206): OK
Tue May 28 14:45:03 2019 local1.info gsmd[2491]: gsmd send: 'AT+CGMR' (8)
Tue May 28 14:45:03 2019 local1.info gsmd[2491]: gsmd get: 'EC25EFAR02A08M4G' (16)
Tue May 28 14:45:03 2019 local1.info gsmd[2491]: gsmd send: 'AT+QICSGP=1' (12)
Tue May 28 14:45:03 2019 local1.info gsmd[2491]: gsmd get: '+QICSGP: 1,"","","",0' (21)
Tue May 28 14:45:03 2019 local1.info gsmd[2491]: gsmd send: 'AT+QICSGP=1,1,""' (17)
Tue May 28 14:45:03 2019 local1.info gsmd[2491]: gsmd get: 'OK' (2)
Tue May 28 14:45:03 2019 daemon.notice netifd: ppp (19206): OK
Tue May 28 14:45:03 2019 local1.info gsmd[2491]: gsmd send: 'AT+QICSGP=3' (12)
Tue May 28 14:45:03 2019 local1.info gsmd[2491]: gsmd get: '+QICSGP: 1,"sew-eurodrive","","",0' (34)
Tue May 28 14:45:03 2019 local1.info gsmd[2491]: gsmd send: 'AT+QICSGP=3,1,""' (17)
Tue May 28 14:45:03 2019 local1.info gsmd[2491]: gsmd get: 'OK' (2)
Tue May 28 14:45:03 2019 daemon.notice netifd: ppp (19206): OK
Tue May 28 14:45:03 2019 local1.info gsmd[2491]: gsmd send: 'AT+QICSGP=3,1,"sew-eurodrive","","",0' (38)
Tue May 28 14:45:03 2019 local1.info gsmd[2491]: gsmd get: 'OK' (2)
Tue May 28 14:45:03 2019 daemon.notice netifd: ppp (19206): OK
Tue May 28 14:45:04 2019 daemon.notice netifd: ppp (19241): [05-28_14:45:04:036] WCDMA<E_QConnectManag
er_Linux&Android_V1.1.38
Tue May 28 14:45:04 2019 daemon.notice netifd: ppp (19241): [05-28_14:45:04:036] /usr/sbin/quectel-CM pr
ofile[3] = sew-eurodrive///0, pincode = (null), config = ppp
Tue May 28 14:45:04 2019 daemon.notice netifd: ppp (19241): [05-28_14:45:04:038] Find /sys/bus/usb/devic
es/1-1.3 idVendor=2c7c idProduct=0125
Tue May 28 14:45:04 2019 daemon.notice netifd: ppp (19241): [05-28_14:45:04:038] Find /sys/bus/usb/devic
es/1-1.3:1.4/net/wwan0
Tue May 28 14:45:04 2019 daemon.notice netifd: ppp (19241): [05-28_14:45:04:039] Find usbnet_adapter = w
wan0
Tue May 28 14:45:04 2019 daemon.notice netifd: ppp (19241): [05-28_14:45:04:039] Find /sys/bus/usb/devic
es/1-1.3:1.4/usbmisc/cdc-wdm0
Tue May 28 14:45:04 2019 daemon.notice netifd: ppp (19241): [05-28_14:45:04:039] Find qmichannel = /dev/
cdc-wdm0