Flukso dies periodically with increasing frequency

Hi,

A few days ago, one of our Fluksos went off-line suddenly and was not reachable over WiFi. I switched it off and on and it came back quickly. The next time this happened it didn't get back online after a few minutes so I just tried to swap the power supply and it eventually came up with the new one. I thought the power supply was getting a bit "tired" and was glad to have things repaired that way. Now today there was another hang and I had to switch it off and on again which worked.
On next hang, I will be getting the thing off the wall and check if all internal connections are seated well or if visually a problem can be seen. But I am prepared to replace the device and I wanted to ask what this does to the data already in flukso.net from this device:
Can I just delete the device from my account, add a new one with the same sensors attached and continue with my data stream or is there some intervention from Flukso needed to make sure my measurements up until now are not lost ?

Thanks - Christoph