@Doğancan This solution worked for me (I tried it on merging HTML files succesfully):
@Diego-Raguindin said in Combine Plugin Gone!?:
This worked perfectly for me:
Put all of the files you want to combine in the same folder. Easiest would be at root-level. Run a command prompt CD to the folder in Step 1 Enter command copy *.csv filename.csv where “filename” is the desired output filename Hit enter File ‘filename.csv’ is created in the same folder