As mentioned, 208V will not work for the EVSE provided by Nissan. Based on the Nissan Leaf manuals, that EVSE requires the following voltage ranges in order to work properly.
I don't have that voltage issue, so the Nissan EVSE has been working fine for me. Although, earlier this year I bought and installed an Aerovironment (AV) EVSE from Webasto overstock; that unit works on 208V-240V; it is my main EVSE and the portable Nissan one is now a backup.
Depending on your budget, you may want to look at wall-mounted or portable EVSE units that will work with 208V. Some common brands include Webasto, ClipperCreek, Grizzl-E, JuiceBox, OpenEV. Others can chime in with more brands.
2018 Nissan Leaf S w/QC
Placed in action: 9/2018