Goodday: CU seems to be permissible only in extremely serious cases. I came to an agreement with administrator RD252 ?? to register with all previous (unwarranted) complaints about IP hopping then to be taken off the table. Once I registered I have only used Fynire. I can give no other assurances and don't see why I need to. O Fenian et al use any and every bureaucratic device to wear down their 'opponents'. However you can see an example in the Peter Hart article where they were seen off.