I can only assume you did not execute some of the steps in the way you describe or you uploaded the wrong GEDCOM file.
If FH is not displaying the Names of Individuals then those Names are not in the GEDCOM file and won't be in any export.
Instead of all those manual processes, I suggest you use the Plugins provided to remove those details.
See FHUG Knowledge Base Exporting a Family Tree with/without Media
and in particular the Export to Website Without Sensitive Data
The initial Export > GEDCOM File...
step can use a Query for your Ancestors. Standard Query called Ancestors
should be OK.
I suggest you Exclude
all Media Records
and all Source Records
as they are not needed by GEDMATCH.
In FH v7 it does not offer to open the exported GEDCOM file so you must do that manually.
Then use the Clean Living Persons
plugin to remove all sensitive details from Individuals with the Living flag.
Finally, use the Export Gedcom File
plugin to create a GEDCOM file without all the FH extensions.
Select the GEDCOM Export Mode (Std) Standard GEDCOM Release 5.5
or (Str) Standard GEDCOM Release 5.5.1
but select the (-) Brief Data
mode to the left. Otherwise, keep the default settings and upload the exported GEDCOM to GEDMATCH.