Most of the issues online were dated back in 2019. MF01S model should be relatively "safe" option imo. Moreover, like what Sunnysunsun has mentioned, spare parts are made available for purchase for those who is confident of self-troubleshooting.
First place to ask would be the manufacturer. Ask Astrolux or Mateminco (MT18S). They are the only ones with the part.
All parts should be compatible between the MF01S and MT18S.
Astrolux is not a company, its the house brand name used by Banggood. So you would contact Banggood.
The company that made that particular light for Banggood is Mateminco.
So any parts will come from Mateminco. You can contact Mateminco directly or go through Banggood and they will get the part from Mateminco. Hopefully one of the two will sell you the replacement parts.