Non-planar elliptic vertex

We consider the problem of obtaining higher order in regularization parameter $\epsilon$ analytical results for master integrals with elliptics. The two commonly employed methods are provided by use differential equations and direct integration parametric representations terms iterated integrals. Taking non-planar elliptic vertex as an example we show that addition to mentioned one can solution power series. Moreover, last case it is possible obtain exact expressible either generalized hypergeometric or Kamp\'e de F\'eriet functions