The phrase "have difficulty using" is correct and usable in written English.
You can use this phrase to express difficulty in using a particular thing, such as a tool, an object, or a skill. For example: "John had difficulty using the drill to put together the new bookshelf."
We know some people will have difficulty using these tools on government IT.
Q. -- Senator, why do you have difficulty using the word "endorsement" in your support for Governor Bush?
He appeared to have difficulty using his left hand because of, doctors believe, a stroke he suffered last August.
Though it is marketed mostly for individuals with disabilities or injuries who have difficulty using keyboards, voice operation is also an attractive alternative for multitaskers.
The way they have played this season they would have difficulty using the Tampa Bay Devil Rays to jump-start their division drive.
The Italian government does not want a foreigner to take control, but it would have difficulty using its golden share to block a European bidder.
Practically, some stakeholders might have difficulties using other methods, such as weighting the indicators or using the analytical hierarchy process (Saaty 1980).
It was anticipated that although patients might have difficulties using HealthSpace these would generally be remedied by technical modifications to the software.
In addition, patients may have difficulties using the nasal cannula, especially if they prefer to breathe through the mouth, or the equipment may not be available in all settings.
This is a useful approach so that people who do not speak English - and who may have difficulties using the emergency and urgent care system because of this - can be included in the survey.
