Uncountable words: ‘Heyday’, ‘yesteryear’…

YOU are welcome to the week of my birth, June 19 precisely! To use Nigerian parlance, all readers of mine must ‘show me love’!
“…on his emergence as the vice chairman of the Southern Nigeria Governors (Governors’) Forum.”
“…speak volume (volumes) of your capabilities.” This error-ridden advertorial was signed by five lawmakers!
“…despite the fact that our party performed creditably well.” Delete ‘well’—it is an overkill. You either use ‘creditably’ or ‘well’ as both cannot co-function.
“…the financial institutions, especially those listed on the Nigerian Exchange Limited (another comma) are positioning to….”
“This emerged as the SEC yesterday, released its framework to….” Eithe...