Hi there,
I used Wio LTE Cat.1 EU version. WioLTEforArduino.h seem to be used with Groves, wio_tracker.h can be downloaded in
https://github.com/Seeed-Studio/Wio_LTE_Arduino_Library.
I have been in situations where GPS signals are not searchable, but when I installed GPS antenna and placed them in an open space, they could search for GPS signals.
Best Regards,
Blu