eServGlobal said its core business revenue was expected to fall short of previous guidance due to delays signing significant orders.
Revenue would be in the range of €8.3m to €8.5m, the company said.
Signed agreements worth €3m of revenue, which were expected in the fourth quarter, had now been signed in January, with the full value recognisable over a three-year period.
Other opportunities for the core business remained "very active".
"The anticipated execution of these contracts will contribute to a positive start to 2018 for the core business of eServGlobal," the company said.
At 2:41pm: (LON:ESG) eServGlobal Ltd share price was -1p at 11.5p