ecoflow with transformer

“Will the EcoFlow Delta 3 Classic power my freezer compressor through a step-up transformer?
I have a Donper L58CU1 compressor (R290 refrigerant, LBP, 1/6 HP, ~270W cooling capacity, 240V/50Hz) running through a Chinese step-up transformer (110V input → 220V output, 1000VA rated, Xin Hong brand).
The transformer draws from the 120V outlet and outputs 220V to feed the compressor. The transformer itself has losses of about 10-15%.
My questions:
Will the EcoFlow Delta 3 Classic (1800W continuous / 3600W surge) handle the startup spike (LRA) of this compressor through the transformer?
Does the Delta 3 Classic output pure sine wave at 120V? (required for the transformer to work correctly)
Any risk of the X-Boost feature kicking in and distorting voltage to the transformer/compressor?
Has anyone run a fridge or freezer compressor through a step-up transformer on a Delta 3 or similar EcoFlow unit?
Total estimated load: ~160-200W running, surge up to ~600-900W through the transformer. Transformer is always-on drawing ~20-25W baseline.
Thanks!”**