GPRS Issues

Hello ,
Well yesterday my new Hologram sim arrived and i am planning to use it with my chineese GPS Tracker(ZX303) which worked perfect till now with my current phone sim. With the new sim i cannot get my device connected with the network(SMS worked fine) i send the sms command required to set the APN to my device and there is 2G coverage in my area in Greece. Also i tried to put the hologram sim in my phone and put the prefered network on 2G and worked no problem.
Any suggestions?
thank you

My tracker provider says that the SIM need Caller ID function

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