Regarding the "static" displayed when you turn it on. Mine certainly behaves in the same manner, and I'm assuming that this, like the screen saving behavior where screens will go black if you haven't interacted with the unit for a while, are intended to counteract the bad image retention habits typical of OLED displays.
Click-y attacks are to be expected with free-running waveforms and fast attack envelopes. The oscillator section of the manual addresses this explicitly:
"When the amplifier envelope is set for a fast attack, this can cause a soft, but detectable, pop or click at the beginning of a note because the note might be gated on at a point in the wave’s cycle other than a zero crossing."
So you have a few options: embrace the click as part of the sound, turn the Wave Reset parameter on for all oscillators, or soften the attack a little with a tweak to the amplitude envelope.
Enjoy your new instrument! It's astonishingly capable.