In any case, if you encounter errors in the Linksys RE7000 working, several reasons can be there for causing issues. The extender might stop working or work slowly and provide interrupted signals to the networked devices. In that case, fixing these issues is necessary as early as possible to get the extender’s performance optimal. In the first case, check the extender’s connectivity to the existing router and devices whether these are connected or not. Also, verify if the router is transferring signals continuously or not as there can be an intermittent connection between devices. If there is too much distance between the extender and the router, then make it less by moving the extender closer to the router. 

Further, check the Linksys RE7000 setup installed settings whether these are in the right sequence or not. If these are not, then you need to manage them again by resetting and installing the extender. Choose the dedicated reset button on the extender’s panel and use it to discard its configured settings. Then, do the setup again and get the working error fixed finally.