@ChristosVl, the CPE was designed for long-range directional links, thus it's usually being used pair-wise (i.e. CPE to CPE, or CPE to WBS). It does not perform well to feed standard clients because of following reasons:

• The max. coverage distance of a CPE210 is several kilometers. The max. coverage distance of a consumer devices is a few dozen meters only. Albeit the consumer device can »see« the CPE's SSID over, say, 250 meters, it won't be able to send anything back over such a distance. The consumer device's antennas are just too weak for this distance.
   
• The antenna beam width of a CPE210 is 65º on the H plane and 35º on the E plane only in order to concentrate RF energy. Albeit in 100 meters distance the covered area is about 127 meters on the H plane, in 1m distance from the CPE it is only 1.27m (and even only 0.63m on the E plane). Thus, if the consumer device is outside this 1.27m × 0.63m area, signal strength will be weaker or connection will be lost completely.

If you want to extend WiFi to a garden, use EAP225-Outdoor, which has a 360º antenna beam width and has been designed for supplying nearby areas (up to ~100m).