It’s not uncommon for publishers to grant fee waivers on newly-launched journals. Tha appears to be the case here, as this journal is brand new and has no articles yet.
Then they use these good articles to attract articles from others, and the later articles are not as good because they do a lax peer review, or none at all.
Regarding the editorial board for this journal, there are seven members. There are a lot of OA electrical engineering journals. I can’t comment on the ed board members credentials, but I note the lack of any from the US.
My advice: avoid this publisher — find a better one.