There are several models of the RFL100 data logger. The models differ from each other by the implementation of the wireless connection and its operating frequency band. Only use a model that is approved for use in your country. You can verify the model and operating frequency of the RFL100 from its type label.
The RFL100 can only connect to an AP10 access point if its wireless model is compatible. For example, the AP10E model that operates on the 868 MHz frequency band will only connect 868 MHz models of the RFL100 data logger.