The investment was made several years ago in order to diversify holdings. Broker announcement is as followed:

All of the instruments that we offer for trading on our platform are subject to the conditions in the underlying markets that they are based on. The continued availability of Russian based instruments is dependent on their availability on the world exchanges, and any international sanctions. In addition, we may limit the ability to invest in any instrument on our platform based on our internal risk management considerations. This may include, but is not limited to, closing positions in certain instruments.

Currently, due to the severe lack of liquidity in the underlying markets and therefore what is available to eToro from our liquidity providers, it is necessary to remove the stock Magnit PJSC (MGNT.L) from our platform:

Any investment in MGNT.L that remains open at the end of business on Friday, March 4, 2022, will be closed at the last tradable rate in the market.
The value of the position at the time of closure will be returned to the account balance.