Yes, they can go for Hajj. Their Hajj will be correct. It is possible that through the duas of Hajj maybe Allah will help in paying off the debts. However, permission should be taken from the creditors before travelling.
Tafseer Raheemi 7th Annual Youth Conference | Iman Under Fire: Holding On In Times of Trial & Tribulations, Keeping Hope & Staying Firm | HLCE | Bolton | 2.8.25
TafseerRaheemi · Tafseer Raheemi 7th Annual Youth Conference | Iman Under Fire: Holding On In Times of Trial & Tribulations, Keeping Hope & Staying Firm