Hi,
Does your products have a weight ?
UPS / PostNL plugins requires weight to process the shipping price.
Manual shipping plugin can work without price but you have to activate the option "force shipping regardless of weight".
This option won't help the two other plugins to work but for the "self pickup" should be displayed.
Also, please check that your checkout workflow right contains the step "shipping" after the step "address" (or in the same column).
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.