Downloaded apps only blink

[Yawstring]

Week old iPad 2
Down loaded 4 apps
Yesterday the downloaded apps only blink and do not execute. Other apps function as expected.

How do I fix this?
Thanks for the help

 

[phoenixip2]

confirm whether they are for ipad or only for iphone

 

[Yawstring]

They are iPad apps and did function for several days then now only blink when selected.

 

[Yawstring]

I downloaded a new app and it functioned OK. The previously non-responding apps now respond. No idea what the problem was but it seems to be fixed.