Need help getting SMS to work

Device has been shared and details share to @Javon_ma via pm for Technical Support via GoodCloud.

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i'm having this problem now too, but in a weird way - i can send but not receive. this is a huge problem, as i need to be able to get 2FA codes to this number...the weird thing is that it was working until today. i moved the router to a new location, but signal seems fine here. speeds still 200-300+ mbps on 5G SA.

did you ever get this working? i'm seeing the exact same symptoms...this worked from the time i first installed the sim until about a week ago, now i can send SMS but can't receive anything. nothing comes through. trying to lock to LTE bands only or 5G NSA don't work either, still can't receive any SMS.

They collected the module logs and have sent them to the manufacturer now. No update yet.. Once they update me I will let you know here..

it seems this may be related to either band locking or removing power from the router to move it to another location.

i normally have the router up at home acting as backup internet for our fios connection, but occasionally take it on trips with me...today after SMS had been working again for a while i moved it to the car for a bit and disabled band masking (as i want it to be able to use all bands while we're on the road), then moved it back to the house...now SMS isn't coming through again. this is the same pattern as the last time this happened, when i was testing the signal at another location in the house. the question is why does it happen when removing power but then all of a sudden start working again after plugged in for an extended period of time?

i've sent the router to tech support, i guess we'll see if they can find anything. it's frustrating and annoying to have this continue to happen, to say the least.

after many research and test by me and GL staff they also accept that SMS working until firmware version 4.4.9. SMS not working with all firmware after 4.4.9.
so, this is problem with GL firmware.

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I have 5G NSA, I can receive SMS, but I can not send them. Has this issue been resolved already?

I am using the latest firmware with module firmware version: RM520NGLAAR03A03M4G

btw, I can send SMS while I am connected to 3G

The SIM works in the phone normally, it can send SMS in 5G NSA
The SIM works in ZTE F50 normally while connected to 5G NSA.

Why do I need to send SMS if some of you ask?
I just want to automate a few things in my home, and I want to know when they disconnect from the network by getting an SMS.

I own a newly bought GL-EX3000
I hate the latest online firmware that the admin UI allows:

Version: 4.0
Firmware Type: 0704release5

I have upgraded the module firmware to the latest RM520NGLAAR03A04M4G
Downloaded from the following git repo:

Some info about the cell I am connected to:

gl_modem AT 'AT+QENG="servingcell"
+QENG: "servingcell","NOCONN"
+QENG: "LTE","FDD",425,03,BD802,353,1800,3,5,5,1CAD,-93,-20,-52,6,6,-20,-
+QENG: "NR5G-NSA",425,03,353,-97,4,-11,647424,78,12,1

OK
gl_modem AT 'AT+QCAINFO'
+QCAINFO: "PCC",1800,100,"LTE BAND 3",1,353,-96,-20,-51,-10
+QCAINFO: "SCC",9260,50,"LTE BAND 28",1,353,-81,-20,-50,-10,0,-,-
+QCAINFO: "SCC",647424,12,"NR5G BAND 78",353

OK

Here are my tries from the posts above:

service |  grep SMS

/etc/init.d/sms_manager            enabled         running
/etc/init.d/smstools3              enabled         running

service sms_manager restart && service smstools3 restart
Creating minimum spool directories

I will be hiding the number with "x"es

AT+CGSMS=2

OK
AT+CMGS="+xxxxxxxxxxxx"

+CMS ERROR: 304

I get ERROR 304 immediately, it doesn't wait for input

AT+CMGF=1

OK
AT+CMGS="+xxxxxxxxxxxx"

+CMS ERROR: 304

Same behaviour, I get ERROR 304 immediately, it doesn't wait for input

AT+QCFG="IMS"

+QCFG: "ims",1,0