ROAS has improved from 915% to 1,795% over four months. Search IS is climbing. Cost per conversion is declining. The January Display campaign waste has been eliminated. The primary Shopping campaign is scaling well.
The structural problems haven't been resolved. April's conversion drop, zero-ROAS Shopping campaigns absorbing ~€350–400/month, a Search campaign running outside its own pause, and Search IS still capped at 50% all point to inefficiencies the ROAS trend is papering over.