Tradfri Bulbs disconnected from Hue Bridge

So I got 3 IKEA Tradfri bulbs and 3 On/Off switches connected up ok to the Hue Bridge with the Hue Essentials app and using Touchlink. Bit of a faff but everything working fine for a week or so.

I then added a new Philips Hue bulb and switch in another room and then suddenly 2 of the 3 bulbs and switches stopped working.

I’ve hooked them back up again but is this going to be a regular thing every now and then? If it is, I’d rather pay the money for Hue bulbs as they seem to install and function way better.