Ego Mower won't start? Check these items. LM2130SP or 2135

EGO POWER+ 21" SELECT CUT™ MOWER WITH TOUCH DRIVE™ SELF-PROPELLED TECHNOLOGY
LM2130SP or LM2135SP w/
7.5 Amp hr battery and rapid charger.

The quick start guide showed basic pics without a description clarifying how to start the mower.... so in a Nutshell:
1. Raise and swivel the handle. It can click into 1 of 3 positions to adjust the height.
2. Unclip the 2 green clips and extend the handle. you'll see to arrows and a line on the inside edge of the handle indicating how far to go. Now from the outside of the handle, confirm the holes line up so you can secure the green clips into place.
3. Confirm your battery is charged and installed, being sure it is fully clicked into place.
4. Press and hold the power button, now while holding the power button, pull back the bail lever. Once the motor starts running you can now release the power button. (please note earlier models had a slightly different power switch..... this is a 2024 model) .

Good Luck.