Ip changes wont mess up service. I take my rig with me when traveling a lot and have never had an issue when using a new ip. Service checks for login/pass, serial number, device id, mac address, and thats about it. Cheers!
Use the recommended mag or avov boxes. Or upgrade your kodi device. For kodi I use a pc with a i7 processor 32GB of ram with a gtx 970 graphics card. I never have any issues unless service is down for everyone.