Lithium batteries suffer the so-called "passivation" problem, well described in https://shop.baltrade.eu/en/blog/passivation-in-lithium-batteries-we-explain-this-interesting-and-quite-common-phenomenon-52 .
In the chart below, from Baltrade sp. z o.o., it's shown, in blue, the battery voltage when a load is applied to the battery (320ohm resistor) after a long time of inactivity: voltage initially drops to a very low value, needing 2 minutes of activity to return to a normal value.
CR2032 battery and Creasol remote controls
It's reasonable that, the first time you try a Creasol remote control, the red and green LEDs flash alternately, indicating that the battery is almost flat even if it's new! After a few seconds of transmission, releasing and pressing a button (to transmit) will cause the LED to flash only red, indicating that the battery has returned to normal.
In some cases, the remote control may not turn on at all: in this case, press buttons 1 + 2 together to simulate the duplication procedure and leave the remote control in duplication mode (without copying anything) until the procedure is completed. In this case, the remote control will start receiving (lower consumption than transmitting) and will initiate a soft battery recovery.
Unfortunately, prolonged non-use of the remote control leads to the formation of a passivation layer inside the battery, as explained in the aforementioned article, which can only be deactivated with normal use of the battery.