Claim device stuck on 'READY'

I am currently trying to claim my nRF9151DK on the nrf cloud. I went through the Quick Start steps and activated my SIM card but my device has been stuck in this state for quite some time now:

I received this email after setting up the SIM card so I assume it is activated:

When I look at the serial output of the device I do see a bunch of warnings about registration being rejected. Could this be the issue?

[00:00:00.262,542] <dbg> main: main: Main has started
[00:00:00.262,603] <dbg> main: running_entry: running_entry
[00:00:00.262,634] <dbg> main: passthrough_mode_entry: passthrough_mode_entry
[00:00:00.262,695] <dbg> main: passthrough_disconnected_entry: passthrough_disconnected_entry
[00:00:00.263,458] <dbg> cloud: cloud_module_thread: Cloud module task started
[00:00:00.263,549] <dbg> cloud: state_running_entry: state_running_entry
[00:00:00.263,610] <inf> nrf_provisioning_coap: Init CoAP client
[00:00:00.264,251] <dbg> cloud: state_disconnected_entry: state_disconnected_entry
[00:00:00.264,587] <dbg> main: passthrough_disconnected_entry: passthrough_disconnected_entry
[00:00:00.264,953] <dbg> fota: fota_module_thread: FOTA module task started
[00:00:00.265,014] <dbg> fota: state_running_entry: state_running_entry
[00:00:00.265,838] <dbg> fota: state_waiting_for_poll_request_entry: state_waiting_for_poll_request_entry
[00:00:00.265,960] <dbg> location_module: location_module_thread: Location module task started
[00:00:00.266,021] <dbg> location_module: state_running_entry: state_running_entry
[00:00:00.266,662] <dbg> location_module: state_running_entry: Location library initialized
[00:00:00.266,815] <dbg> network: state_running_entry: state_running_entry
[00:00:00.266,845] <inf> network: Bringing network interface up and connecting to the network
[00:00:00.522,430] <inf> nrf_modem_lib_trace: Trace thread ready
[00:00:00.523,834] <inf> nrf_modem_lib_trace: Trace level override: 2
[00:00:00.667,175] <dbg> nrf_provisioning: cert_provision: Certificate already provisioned
[00:00:00.667,358] <dbg> network: state_running_entry: Network module started
[00:00:00.667,388] <dbg> network: state_disconnected_entry: state_disconnected_entry
[00:00:00.667,388] <dbg> network: state_disconnected_searching_entry: state_disconnected_searching_entry
[00:00:11.026,763] <wrn> lte_lc: Registration rejected, EMM cause: 15, Cell ID: 14257275, Tracking area: 258, LTE mode: 7
[00:00:11.686,462] <wrn> lte_lc: Registration rejected, EMM cause: 15, Cell ID: 568589, Tracking area: 31601, LTE mode: 7
[00:00:12.210,754] <wrn> lte_lc: Registration rejected, EMM cause: 15, Cell ID: 25958659, Tracking area: 22711, LTE mode: 7
[00:01:11.307,067] <wrn> lte_lc: Registration rejected, EMM cause: 13, Cell ID: 25958759, Tracking area: 12711, LTE mode: 9
[00:01:16.333,007] <wrn> lte_lc: Registration rejected, EMM cause: 15, Cell ID: 14257395, Tracking area: 1258, LTE mode: 9

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