Add spaces: Eachtimesomeonebidswithinthelast5minutesofanauction,theclosingtimeisextendedbyanother5minutesuntilnomorebidsareplaced.

Answer: Each time someone bids within the last 5 minutes of an auction, the closing time is extended by another 5 minutes until no more bids are placed.

Add spaces: IndividualswithsurnameHAMMELBURG

Answer: Individuals with surname HAMMELBURG

Add spaces: Andalthoughitisalwayshardtodoanythingthefirsttime,thenIwoulddefinitelynothavebeenwithoutopportunity.

Answer:
And although it is always hard to do anything the first time, then I would definitely not have been without opportunity.