If you are encountering problems with your licences then please download the Foundry Licence Diagnostic (FLD) utility, run it on the affected machine(s) and send the output file(s) to support@thefoundry.co.uk along with a description of the problems you are encountering.
The Foundry FLEXlm Tools User Guide tells you everything you need to know about licensing Foundry products with FLEXlm.