Ah, forgot Petmate doesnt save the character to switch charset when exporting to .seq
You'll need use an hex editor to insert either $8e for upper/gfx or $0e for upper/lower charset (at the start of the file).
This should be an easy fix that you can do on a SEQ file at the beginning of the file. Thanks!
Right now when using your graphics on a BBS it is not setting the ABC abc charset. Most BBSs use SEQ files to accomplish this.
We discuss this in another Github issue for a BBS software: https://github.com/retrocomputacion/retrobbs/issues/8#issuecomment-1396418189
What is stated:
This should be an easy fix that you can do on a SEQ file at the beginning of the file. Thanks!