Canon Pixma MP210 will not recognize high yield PG-50 & CL-51 cartridges.

The canon pixma mp 210 uses PG-30, CL-31, PG-40, CL-41
It will not recognized the PG-50 & CL- 51
See if you can return it and exchange it for the PG-40 & CL-41.
If not, the only other way is to transfer the ink into the other ink cartridges.
The cartridge cap can be removed by a sharp tap at the back end of the cover.
You can glue back the cover.
If there is an E 1,6 Error code, Ink has run out after you install your ink cartridges
Press and hold the stop/reset button for about 10 seconds to clear the error code.