Question about Swaytronic Solar panel flexible

i wanted to connect the panel to the EcoFlow DELTA, but the built-in MPPT controller did not find a stable power to charge, it always fluctuated between 0W and about 100W input.

I think so, the n specifications of the RIVER MAX (10-25 V DC, max. 12 A). The solar panel delivers voltage in the specified range and approx. 6-9 A current depending on the sun... I have connected this panel to a Victron solar controller, but have never measured 150 watts so far, so this should be suitable for the Ecoflow.