The font is not supported by FontCreator as it only contains color bitmap glyph data. Such raster-based (png) images are stored in the internal CBDT & CBLC tables, but FontCreator only supports
vector based color outlines (COLR and SVG).
Windows will also refuse such fonts, as it needs monochrome outlines. I think these are mostly used with smart phones.
FontLab seems to support it.